C7.1 Engines and Generator Sets Caterpillar

Diagnostic Trouble Codes

Usage:

C7.1 770

Diagnostic Trouble Codes in J1939 Order

Table 2 lists the diagnostic trouble codes that apply to the engine. The codes are listed in J1939 order. Use the electronic service tool to determine the codes that are active or logged. Then refer to the appropriate troubleshooting procedure for more information.

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Table 1
List of Diagnostic Trouble Codes
J1939 Code and Description	CDL Code and Description	Troubleshooting Procedure
-	246-9 Proprietary CAN Data Link : Abnormal Update Rate	Troubleshooting, "CAN Data Link - Test"
-	246-14 Proprietary CAN Data Link : Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"
-	296-9 Transmission Control : Abnormal Update Rate	Troubleshooting, "CAN Data Link - Test"
-	296-14 Transmission Control : Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"
-	549-2 Throttle Lock Enable Switch : Erratic, Intermittent, or Incorrect	Troubleshooting, "Throttle Lock - Test"
-	549-3 Throttle Lock Enable Switch : Voltage Above Normal	Troubleshooting, "Throttle Lock - Test"
-	549-4 Throttle Lock Enable Switch : Voltage Below Normal	Troubleshooting, "Throttle Lock - Test"
-	562-9 Caterpillar Monitor System : Abnormal Update Rate	Troubleshooting, "CAN Data Link - Test"
-	562-14 Caterpillar Monitor System : Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"
-	596-9 Implement Control : Abnormal Update Rate	Troubleshooting, "CAN Data Link - Test"
-	596-14 Implement Control : Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"
-	1603-14 Machine Control Module : Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"
-	2770-3 Throttle Lock Resume/Decel Switch : Voltage Above Normal	Troubleshooting, "Throttle Lock - Test"
-	2770-4 Throttle Lock Resume/Decel Switch : Voltage Below Normal	Troubleshooting, "Throttle Lock - Test"
-	2771-3 Throttle Lock Set/Accel Switch : Voltage Above Normal	Troubleshooting, "Throttle Lock - Test"
-	2771-4 Throttle Lock Set/Accel Switch : Voltage Below Normal	Troubleshooting, "Throttle Lock - Test"
27–3 EGR #1 Valve Position : Voltage Above Normal	3407–3 EGR Valve Position Sensor : Voltage Above Normal	Troubleshooting, "Valve Position - Test"
27–4 EGR #1 Valve Position : Voltage Below Normal	3407–4 EGR Valve Position Sensor : Voltage Below Normal	Troubleshooting, "Valve Position - Test"
29–2 Accelerator Pedal Position #2 : Erratic, Intermittent, or Incorrect	774–2 Secondary Throttle Position Sensor : Erratic, Intermittent, or Incorrect	Troubleshooting, "Switch Circuits - Test" or Troubleshooting, "Speed Control (Analog) - Test"
29–3 Accelerator Pedal Position #2 : Voltage Above Normal	774–3 Secondary Throttle Position Sensor : Voltage Above Normal	Troubleshooting, "Speed Control (Analog) - Test" or Troubleshooting, "Speed Control (PWM) - Test"
29–4 Accelerator Pedal Position #2 : Voltage Below Normal	774–4 Secondary Throttle Position Sensor : Voltage Below Normal	Troubleshooting, "Speed Control (Analog) - Test" or Troubleshooting, "Speed Control (PWM) - Test"
29–8 Accelerator Pedal Position #2 : Abnormal Frequency, Pulse Width, or Period	774–8 Secondary Throttle Position Sensor : Abnormal Frequency, Pulse Width, or Period	Troubleshooting, "Speed Control (PWM) - Test"
51–3 Engine Throttle Position : Voltage Above Normal	3515–3 Engine Throttle Valve Position Sensor voltage above normal	Troubleshooting, "Valve Position - Test"
51–4 Engine Throttle Position : Voltage Below Normal	3515–4 Engine Throttle Valve Position Sensor voltage below normal	Troubleshooting, "Valve Position - Test"
91–2 Accelerator Pedal Position #1 : Erratic, Intermittent, or Incorrect	91–2 Throttle Position Sensor : Erratic, Intermittent, or Incorrect	Troubleshooting, "Switch Circuits - Test" or Troubleshooting, "Speed Control (Analog) - Test"
91–3 Accelerator Pedal Position #1 : Voltage Above Normal	91–3 Throttle Position Sensor : Voltage Above Normal	Troubleshooting, "Speed Control (Analog) - Test" or Troubleshooting, "Speed Control (PWM) - Test"
91–4 Accelerator Pedal Position #1 : Voltage Below Normal	91–4 Throttle Position Sensor : Voltage Below Normal	Troubleshooting, "Speed Control (Analog) - Test" or Troubleshooting, "Speed Control (PWM) - Test"
91–8 Accelerator Pedal Position #1 : Abnormal Frequency, Pulse Width, or Period	91–8 Throttle Position Sensor : Abnormal Frequency, Pulse Width, or Period	Troubleshooting, "Speed Control (PWM) - Test"
97–3 Water In Fuel Indicator : Voltage Above Normal	3547–3 Water in Fuel System Switch : Voltage Above Normal	Troubleshooting, "Water in Fuel - Test"
100–3 Engine Oil Pressure : Voltage Above Normal	100–3 Engine Oil Pressure Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
100–4 Engine Oil Pressure : Voltage Below Normal	100–4 Engine Oil Pressure Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
100–21 Engine Oil Pressure : Data Drifted Low	100–21 Engine Oil Pressure Sensor : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
105–3 Engine Intake Manifold #1 Temperature : Voltage Below Normal	172–3 Intake Manifold Air Temperature Sensor Voltage Above Normal:	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
105–4 Engine Intake Manifold #1 Temperature : Voltage Above Normal	172–4 Intake Manifold Air Temperature Sensor Voltage Below Normal:	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
108–3 Barometric Pressure : Voltage Above Normal	274–3 Atmospheric Pressure Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
108–3 Barometric Pressure : Voltage Above Normal	3528–3 Barometric Pressure Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
108–4 Barometric Pressure : Voltage Below Normal	274–4 Atmospheric Pressure Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
108–4 Barometric Pressure : Voltage Below Normal	3528–4 Barometric Pressure Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
108–13 Barometric Pressure : Calibration Required	274–13 Atmospheric Pressure Sensor : Calibration Required	Troubleshooting, "Sensor Calibration Required - Test"
108–21 Barometric Pressure : Data Drifted Low	274–21 Atmospheric Pressure Sensor : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
108–21 Barometric Pressure : Data Drifted Low	3528–21 Barometric Pressure Sensor : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
110–3 Engine Coolant Temperature : Voltage Above Normal	110–3 Engine Coolant Temperature Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
110–4 Engine Coolant Temperature : Voltage Below Normal	110–4 Engine Coolant Temperature Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
157-3 Engine Injector Metering Rail #1 Pressure : Voltage Above Normal	1797-3 Fuel Rail Pressure Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
157-4 Engine Injector Metering Rail #1 Pressure : Voltage Below Normal	1797-4 Fuel Rail Pressure Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
168–2 Battery Potential / Power Input #1 : Erratic, Intermittent or Incorrect	168–2 Electrical System Voltage : Erratic, Intermittent or Incorrect	Troubleshooting, "Electrical Power Supply - Test"
168–3 Battery Potential / Power Input #1 : Voltage Above Normal	168–3 Electrical System Voltage : Voltage Above Normal	Troubleshooting, "Electrical Power Supply - Test"
168–4 Battery Potential / Power Input #1 : Voltage Below Normal	168–4 Electrical System Voltage : Voltage Below Normal	Troubleshooting, "Electrical Power Supply - Test"
172–3 Engine Air Inlet Temperature : Voltage Above Normal	2526–3 Air Inlet Temperature Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
172–4 Engine Air Inlet Temperature : Voltage Below Normal	2526–4 Air Inlet Temperature Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
174–3 Engine Fuel Temperature 1 : Voltage Above Normal	174–3 Fuel Temperature Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
174–4 Engine Fuel Temperature 1 : Voltage Below Normal	174–4 Fuel Temperature Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
190–8 Engine Speed : Abnormal Frequency, Pulse Width, or Period	190–8 Engine Speed Sensor : Abnormal Frequency, Pulse Width, or Period	Troubleshooting, "Speed/Timing - Test"
291–5 Engine Start Enable Device 1 : Current Below Normal	2417–5 Ether Injection Control Solenoid : Current Below Normal	Troubleshooting, "Ether Starting Aid - Test"
291–6 Engine Start Enable Device 1 : Current Above Normal	2417–6 Ether Injection Control Solenoid : Current Above Normal	Troubleshooting, "Ether Starting Aid - Test"
411–3 EGR Differential Pressure : Voltage Above Normal	3387–3 EGR Differential Pressure Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
411–4 EGR Differential Pressure : Voltage Below Normal	3387–4 EGR Differential Pressure Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
411–13 EGR Differential Pressure : Out of Calibration	3387–13 EGR Differential Pressure Sensor : Out of Calibration	Troubleshooting, "Sensor Calibration Required - Test"
412–3 EGR Temperature : Voltage Above Normal	3386–3 EGR Temperature Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
412–4 EGR Temperature : Voltage Below Normal	3386–4 EGR Temperature Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
558-2 Accelerator Pedal #1 Low Idle Switch : Erratic, Intermittent or Incorrect	1634-2 Idle Validation Switch #1 : Erratic, Intermittent or Incorrect	Troubleshooting, "Idle Validation - Test"
626–5 Engine Start Enable Device 1 : Current Below Normal	2417–5 Ether Injection Control Solenoid : Current Below Normal	Troubleshooting, "Ether Starting Aid - Test"
626–6 Engine Start Enable Device 1 : Current Above Normal	2417–6 Ether Injection Control Solenoid : Current Above Normal	Troubleshooting, "Ether Starting Aid - Test"
630-2 Calibration Memory : Erratic, Intermittent, or Incorrect	268-2 Programmed Parameter Fault : Erratic, Intermittent, or Incorrect	Troubleshooting, "Configuration Parameters"
631–2 Calibration Module : Erratic, Intermittent, or Incorrect	253–2 Personality Module : Erratic, Intermittent, or Incorrect	Troubleshooting, "ECM Software - Install"
637–11 Engine Timing Sensor : Other Failure Mode	261–11 Engine Timing Offset fault	Troubleshooting, "Timing - Calibrate"
639–9 J1939 Network #1 : Abnormal Update Rate	247–9 SAE J1939 Data Link : Abnormal Update Rate	Troubleshooting, "CAN Data Link - Test"
639–14 J1939 Network #1 : Special Instruction	247–14 SAE J1939 Data Link : Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"
651–2 Engine Injector Cylinder #01 : Erratic, Intermittent or Incorrect	1–2 Cylinder #1 Injector : Erratic, Intermittent or Incorrect	Troubleshooting, "Injector Data Incorrect - Test"
651–5 Engine Injector Cylinder #01 : Current Below Normal	1–5 Cylinder #1 Injector : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
651–6 Engine Injector Cylinder #01 : Current Above Normal	1–6 Cylinder #1 Injector : Current Above Normal	Troubleshooting, "Injector Solenoid - Test"
652–2 Engine Injector Cylinder #02 : Erratic, Intermittent or Incorrect	2–2 Cylinder #2 Injector : Erratic, Intermittent or Incorrect	Troubleshooting, "Injector Data Incorrect - Test"
652–5 Engine Injector Cylinder #02 : Current Below Normal	2–5 Cylinder #2 Injector : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
652–6 Engine Injector Cylinder #02 : Current Above Normal	2–6 Cylinder #2 Injector : Current Above Normal	Troubleshooting, "Injector Solenoid - Test"
653–2 Engine Injector Cylinder #03 : Erratic, Intermittent or Incorrect	3–2 Cylinder #3 Injector : Erratic, Intermittent or Incorrect	Troubleshooting, "Injector Data Incorrect - Test"
653–5 Engine Injector Cylinder #03 : Current Below Normal	3–5 Cylinder #3 Injector : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
653–6 Engine Injector Cylinder #03 : Current Above Normal	3–6 Cylinder #3 Injector : Current Above Normal	Troubleshooting, "Injector Solenoid - Test"
654–2 Engine Injector Cylinder #04 : Erratic, Intermittent or Incorrect	4–2 Cylinder #4 Injector : Erratic, Intermittent or Incorrect	Troubleshooting, "Injector Data Incorrect - Test"
654–5 Engine Injector Cylinder #04 : Current Below Normal	4–5 Cylinder #4 Injector : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
654–6 Engine Injector Cylinder #04 : Current Above Normal	4–6 Cylinder #4 Injector : Current Above Normal	Troubleshooting, "Injector Solenoid - Test"
655–2 Engine Injector Cylinder #05 : Erratic, Intermittent or Incorrect	5–2 Cylinder #5 Injector : Erratic, Intermittent or Incorrect	Troubleshooting, "Injector Data Incorrect - Test"
655–5 Engine Injector Cylinder #05 : Current Below Normal	5–5 Cylinder #5 Injector : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
655–6 Engine Injector Cylinder #05 : Current Above Normal	5–6 Cylinder #5 Injector : Current Above Normal	Troubleshooting, "Injector Solenoid - Test"
656–2 Engine Injector Cylinder #06 : Erratic, Intermittent or Incorrect	6–2 Cylinder #6 Injector : Erratic, Intermittent or Incorrect	Troubleshooting, "Injector Data Incorrect - Test"
656–5 Engine Injector Cylinder #06 : Current Below Normal	6–5 Cylinder #6 Injector : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
656–6 Engine Injector Cylinder #06 : Current Above Normal	6–6 Cylinder #6 Injector : Current Above Normal	Troubleshooting, "Injector Solenoid - Test"
676–6 Engine Glow Plug Relay : Current Below Normal	2246–6 Glow Plug Start Aid Relay : Current Below Normal	Troubleshooting, "Glow Plug Starting Aid - Test"
677–5 Engine Starter Motor Relay : Current Below Normal	444–5 Starter Motor Relay : Current Below Normal	Troubleshooting, "Solenoid Valve - Test"
677–6 Engine Starter Motor Relay : Current Above Normal	444–6 Starter Motor Relay : Current Above Normal	Troubleshooting, "Solenoid Valve - Test"
678–3 ECU 8 Volts DC Supply : Voltage Above Normal	41–3 8 Volt DC Supply : Voltage Above Normal	Troubleshooting, "Sensor Supply - Test"
678–4 ECU 8 Volts DC Supply : Voltage Below Normal	41–4 8 Volt DC Supply : Voltage Below Normal	Troubleshooting, "Sensor Supply - Test"
723–8 Engine Speed Sensor #2 : Abnormal Frequency, Pulse Width, or Period	342–8 Secondary Engine Speed Sensor : Abnormal Frequency, Pulse Width, or Period	Troubleshooting, "Speed/Timing - Test"
1071–5 Cooling Fan Drive Output : Current Below Normal	291–5 Engine Cooling Fan Solenoid : Current Below Normal	Troubleshooting, "Cooling Fan Control - Test"
1071–6 Cooling Fan Drive Output : Current Above Normal	291–6 Engine Cooling Fan Solenoid : Current Above Normal	Troubleshooting, "Cooling Fan Control - Test"
1075–5 Engine Electric Lift Pump for Engine Fuel Supply : Current Below Normal	3666–5 Engine Fuel Supply Lift Pump Relay : Current Below Normal	Troubleshooting, "Fuel Transfer Pump - Test"
1075–6 Engine Electric Lift Pump for Engine Fuel Supply : Current Above Normal	3666–6 Engine Fuel Supply Lift Pump Relay : Current Below Normal	Troubleshooting, "Fuel Transfer Pump - Test"
1076–5 Engine Fuel Injection Pump Fuel Control Valve : Current Below Normal	18–5 Fuel Control Valve : Current Below Normal	Troubleshooting, "Solenoid Valve - Test"
1076–6 Engine Fuel Injection Pump Fuel Control Valve : Current Above Normal	18–6 Fuel Control Valve : Current Below Normal	Troubleshooting, "Solenoid Valve - Test"
1176–3 Engine Turbocharger #1 Compressor Inlet Pressure : Voltage Above Normal	2738–3 Turbocharger #1 Compressor Inlet Pressure Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
1176–4 Engine Turbocharger #1 Compressor Inlet Pressure : Voltage Below Normal	2738–4 Turbocharger #1 Compressor Inlet Pressure Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
1188–5 Engine Turbocharger #1 Wastegate Drive : Current Below Normal	526–5 Turbo Wastegate Drive : Current Below Normal	Troubleshooting, "Solenoid Valve - Test"
1188–6 Engine Turbocharger #1 Wastegate Drive : Current Above Normal	526–6 Turbo Wastegate Drive : Current Above Normal	Troubleshooting, "Solenoid Valve - Test"
1196–2 Anti-theft Component Status States : Erratic, Intermittent or Incorrect	1639–2 Machine Security System Module : Erratic, Intermittent or Incorrect	Troubleshooting, "CAN Data Link - Test"
1196–9 Anti-theft Component Status States : Abnormal Update Rate	1639–9 Machine Security System Module : Abnormal Update Rate	Troubleshooting, "CAN Data Link - Test"
1231–9 J1939 Network #2 : Abnormal Update Rate	2348–9 SAE J1939 Data Link #2 : Abnormal Update Rate	Troubleshooting, "CAN Data Link - Test"
1231–14 J1939 Network #2 : Special Instruction	2348–14 SAE J1939 Data Link #2: Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"
1638–3 Hydraulic Temperature : Voltage Above Normal	600–3 Hydraulic Oil Temperature Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
1638–4 Hydraulic Temperature : Voltage Below Normal	600–4 Hydraulic Oil Temperature Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
2630–3 Engine Charge Air Cooler Outlet Temperature : Voltage Above Normal	3372–3 Engine Charge Air Cooler #1 Outlet Temperature Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
2630–4 Engine Charge Air Cooler Outlet Temperature : Voltage Below Normal	3372–4 Engine Charge Air Cooler #1 Outlet Temperature Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
2791–5 EGR Valve Control : Current Below Normal	3405–5 EGR Valve Control : Current Below Normal	Troubleshooting, "Motorized Valve - Test"
2791–6 EGR Valve Control : Current Above Normal	3405–6 EGR Valve Control : Current Above Normal	Troubleshooting, "Motorized Valve - Test"
2882-2 Engine Alternate Rating Select : Erratic, Intermittent or Incorrect	1743–2 Engine Operation Mode Selector Switch : Erratic, Intermittent or Incorrect	Troubleshooting, "Mode Selection - Test"
2970–2 Accelerator Pedal 2 Low Idle Switch : Erratic, Intermittent or Incorrect	1635-2 Accelerator Pedal 1 Low Idle Switch : Erratic, Intermittent, or Incorrect	Troubleshooting, "Idle Validation - Test"
3241–3 Exhaust Gas Temperature 1 : Voltage Above Normal	535–3 Exhaust Temperature Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3241–3 Exhaust Gas Temperature 1 : Voltage Above Normal	3485–3 Aftertreatment #1 Exhaust Gas Temperature #1 Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3241–4 Exhaust Gas Temperature 1 : Voltage Below Normal	535–4 Exhaust Temperature Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3241–4 Exhaust Gas Temperature 1 : Voltage Below Normal	3485–4 Aftertreatment #1 Exhaust Gas Temperature #1 Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3242–3 Aftertreatment #1 DPF Intake Temperature : Voltage Above Normal	2452–3 DPF #1 Intake Temperature Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3242–4 Aftertreatment #1 DPF Intake Temperature : Voltage Below Normal	2452–4 DPF #1 Intake Temperature Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3251–3 Aftertreatment #1 DPF Differential Pressure : Voltage Above Normal	2458–3 DPF #1 Differential Pressure Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3251–4 Aftertreatment #1 DPF Differential Pressure : Voltage Below Normal	2458–4 DPF #1 Differential Pressure Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3251–13 Aftertreatment #1 DPF Differential Pressure : Out of Calibration	2458–13 DPF #1 Differential Pressure Sensor : Out of Calibration	Troubleshooting, "Sensor Calibration Required - Test"
3358–3 EGR Inlet Pressure : Voltage Above Normal	3385–3 EGR Intake Pressure Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3358–4 EGR Inlet Pressure : Voltage Below Normal	3385–4 EGR Intake Pressure Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3358–13 EGR Inlet Pressure : Out of Calibration	3385–13 EGR Intake Pressure Sensor : Out of Calibration	Troubleshooting, "Sensor Calibration Required - Test"
3358–21 EGR Inlet Pressure : Data Drifted Low	3385–21 EGR Intake Pressure Sensor : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
3464–5 Engine Throttle Actuator 1 Control Command : Current Below Normal	3514–5 Engine Throttle Actuator Control Command : Current Below Normal	Troubleshooting, "Motorized Valve - Test"
3464–6 Engine Throttle Actuator 1 Control Command : Current Above Normal	3514–6 Engine Throttle Actuator Control Command : Current Above Normal	Troubleshooting, "Motorized Valve - Test"
3479–5 Aftertreatment #1 Fuel Pressure Control : Current Below Normal	2461–5 ARD Fuel Pressure #1 Control : Current Below Normal	Troubleshooting, "Solenoid Valve - Test"
3479–6 Aftertreatment #1 Fuel Pressure Control : Current Above Normal	2461–6 ARD Fuel Pressure #1 Control : Current Above Normal	Troubleshooting, "Solenoid Valve - Test"
3480–3 Aftertreatment #1 Fuel Pressure #1 : Voltage Above Normal	2460–3 ARD Fuel Pressure #1 Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3480–4 Aftertreatment #1 Fuel Pressure #1 : Voltage Below Normal	2460–4 ARD Fuel Pressure #1 Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3484–5 Aftertreatment #1 Ignition : Current Below Normal	2465–5 Aftertreatment #1 Ignition Transformer Primary : Current Below Normal	Troubleshooting, "ARD Ignition - Test"
3484–6 Aftertreatment #1 Ignition : Current Above Normal	2465–6 Aftertreatment #1 Ignition Transformer Primary : Current Above Normal	Troubleshooting, "ARD Ignition - Test"
3487–5 Aftertreatment #1 Air Pressure Control : Current Below Normal	2489–5 ARD Air Pressure Control Actuator : Current Below Normal	Troubleshooting, "Motorized Valve - Test"
3487–6 Aftertreatment #1 Air Pressure Control : Current Above Normal	2489–6 ARD Air Pressure Control Actuator : Current Above Normal	Troubleshooting, "Motorized Valve - Test"
3487–7 Aftertreatment #1 Air Pressure Control : Not Responding Properly	2489–7 ARD Air Pressure Control Actuator not responding properly	Troubleshooting, "Motorized Valve - Test"
3488–3 Aftertreatment #1 Air Pressure Actuator Position : Voltage Above Normal	2490–3 ARD Air Pressure Control Actuator Position Sensor : Voltage Above Normal	Troubleshooting, "Valve Position - Test"
3488–4 Aftertreatment #1 Air Pressure Actuator Position : Voltage Below Normal	2490–4 ARD Air Pressure Control Actuator Position Sensor : Voltage Below Normal	Troubleshooting, "Valve Position - Test"
3509–3 Sensor Supply Voltage 1 : Voltage Above Normal	262–3 5 Volt Sensor DC Power Supply : Voltage Above Normal	Troubleshooting, "Sensor Supply - Test"
3509–4 Sensor Supply Voltage 1 : Voltage Below Normal	262–4 5 Volt Sensor DC Power Supply : Voltage Below Normal	Troubleshooting, "Sensor Supply - Test"
3510–3 Sensor Supply Voltage 2 : Voltage Above Normal	2131–3 5 Volt Sensor DC Power Supply #2 : Voltage Above Normal	Troubleshooting, "Sensor Supply - Test"
3510–4 Sensor Supply Voltage 2 : Voltage Below Normal	2131–4 5 Volt Sensor DC Power Supply #2 : Voltage Below Normal	Troubleshooting, "Sensor Supply - Test"
3563–3 Engine Intake Manifold #1 Absolute Pressure : Voltage Above Normal	1785–3 Intake Manifold Pressure Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3563–4 Engine Intake Manifold #1 Absolute Pressure : Voltage Below Normal	1785–4 Intake Manifold Pressure Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3563–13 Engine Intake Manifold #1 Absolute Pressure : Out of Calibration	1785–13 Intake Manifold Pressure Sensor : Out of Calibration	Troubleshooting, "Sensor Calibration Required - Test"
3563–21 Engine Intake Manifold #1 Absolute Pressure : Data Drifted Low	1785–21 Intake Manifold Pressure Sensor : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
3609–3 DPF #1 Intake Pressure : Voltage Above Normal	3464–3 DPF #1 Intake Pressure Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3609–4 DPF #1 Intake Pressure : Voltage Below Normal	3464–4 DPF #1 Intake Pressure Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3609–13 DPF #1 Intake Pressure : Out of Calibration	3464–13 DPF #1 Intake Pressure Sensor : Out of Calibration	Troubleshooting, "Sensor Calibration Required - Test"
3609–21 DPF #1 Intake Pressure : Data Drifted Low	3464–21 DPF #1 Intake Pressure Sensor : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
3695–2 Particulate Trap Regeneration Inhibit Switch : Erratic, Intermittent, or Incorrect	3184-2 DPF Regeneration Inhibit Switch : Erratic, Intermittent, or Incorrect	The Forced Regeneration Switch is installed and the disable regeneration switch is held for longer than 1 minute. Alternatively, the Forced Regeneration Switch is NOT installed and the disable regeneration input through the Datalink is received for longer than 1 minute.
3696–2 Particulate Trap Regeneration Force Switch : Erratic, Intermittent or Incorrect	3183-2 DPF Regeneration Force Switch : Erratic, Intermittent or Incorrect	The Forced Regeneration Switch signal is not recognized by the ECM. The switch may not be configured correctly for the application or there is a problem with the connected module.
3697–5 Particulate Trap Lamp Command : Current Below Normal	1090–5 Particulate Trap Lamp Command : Current Below Normal	Troubleshooting, "Indicator Lamp - Test"
3697–6 Particulate Trap Lamp Command : Current Above Normal	1090–6 Particulate Trap Lamp Command : Current Above Normal	Troubleshooting, "Indicator Lamp - Test"
3698–5 Exhaust System High Temperature Lamp Command : Current Below Normal	1091–5 Exhaust System High Temperature Lamp Command : Current Below Normal	Troubleshooting, "Indicator Lamp - Test"
3698–6 Exhaust System High Temperature Lamp Command : Current Above Normal	1091–6 Exhaust System High Temperature Lamp Command : Current Above Normal	Troubleshooting, "Indicator Lamp - Test"
3837–3 Aftertreatment #1 Secondary Air Pressure : Voltage Above Normal	3493–3 Aftertreatment #1 Secondary Air Pressure Sensor : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3837–4 Aftertreatment #1 Secondary Air Pressure : Voltage Below Normal	3493–4 Aftertreatment #1 Secondary Air Pressure Sensor : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3837–13 Aftertreatment #1 Secondary Air Pressure : Out of Calibration	3493–13 Aftertreatment #1 Secondary Air Pressure Sensor : Out of Calibration	Troubleshooting, "Sensor Calibration Required - Test"
3837–21 Aftertreatment #1 Secondary Air Pressure : Data Drifted Low	3493–21 Aftertreatment #1 Secondary Air Pressure Sensor : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
4212–5 Fan Drive Bypass Command Status : Current Below Normal	291–5 Engine Cooling Fan Solenoid : Current Below Normal	Troubleshooting, "Cooling Fan Control - Test"
4212–6 Fan Drive Bypass Command Status : Current Above Normal	291–6 Engine Cooling Fan Solenoid : Current Above Normal	Troubleshooting, "Cooling Fan Control - Test"
4212–13 Fan Drive Bypass Command Status : Out of Calibration	1551–13 Engine Demand Fan System : Out of Calibration	Troubleshooting, "Cooling Fan - Calibrate"
4214–5 Engine Fan Reverse Actuator : Current Below Normal	485–5 Engine Fan Reversing Solenoid : Current Below Normal	Troubleshooting, "Cooling Fan Reversing - Test"
4214–6 Engine Fan Reverse Actuator : Current Above Normal	485–6 Engine Fan Reversing Solenoid : Current Above Normal	Troubleshooting, "Cooling Fan Reversing - Test"
4215–3 Ground-Level Shutdown Activated : Voltage Above Normal	267–3 Remote Shutdown Input : Voltage Above Normal	Troubleshooting, "Shutdown (Ground Level) - Test"
4215–4 Ground-Level Shutdown Activated : Voltage Below Normal	267–4 Remote Shutdown Input : Voltage Below Normal	Troubleshooting, "Shutdown (Ground Level) - Test"
4265–5 Aftertreatment #1 Transformer Secondary Output : Current Below Normal	3180–5 Aftertreatment #1 Ignition Transformer Secondary : Current Below Normal	Troubleshooting, "ARD Ignition - Test"
4265–6 Aftertreatment #1 Transformer Secondary Output : Current Above Normal	3180–6 Aftertreatment #1 Ignition Transformer Secondary : Current Above Normal	Troubleshooting, "ARD Ignition - Test"
4301–5 Aftertreatment #1 Fuel Injector #1 Heater Control : Current Below Normal	3182–5 Aftertreatment #1 Fuel Injector #1 Heater : Current Below Normal	Troubleshooting, "Solenoid Valve - Test"
4301–6 Aftertreatment #1 Fuel Injector #1 Heater Control : Current Above Normal	3182–6 Aftertreatment #1 Fuel Injector #1 Heater : Current Above Normal	Troubleshooting, "Solenoid Valve - Test"
4783-2 DPF #1 Mean Soot Signal : Erratic, Intermittent or Incorrect	3397-2 DPF #1 Soot Loading Sensor : Erratic, Intermittent or Incorrect	Troubleshooting, "Soot Sensor - Test"
4783-3 DPF #1 Mean Soot Signal : Voltage Above Normal	3397-3 DPF #1 Soot Loading Sensor : Voltage Above Normal	Troubleshooting, "Soot Sensor - Test"
4783-4 DPF #1 Mean Soot Signal : Voltage Below Normal	3397-4 DPF #1 Soot Loading Sensor : Voltage Below Normal	Troubleshooting, "Soot Sensor - Test"
4783-9 DPF #1 Mean Soot Signal : Abnormal Update Rate	3397-9 DPF #1 Soot Loading Sensor : Abnormal Update Rate	Troubleshooting, "Soot Sensor - Test"
4783-12 DPF #1 Mean Soot Signal : Failure	3397-12 DPF #1 Soot Loading Sensor : Failure	Troubleshooting, "Soot Sensor - Test"
4783-13 DPF #1 Mean Soot Signal : Calibration Required	3397-13 DPF #1 Soot Loading Sensor : Calibration Required	Troubleshooting, "Soot Sensor - Test"
4783-14 DPF #1 Mean Soot Signal : Special Instruction	3397-14 DPF #1 Soot Loading Sensor : Special Instruction	Troubleshooting, "Soot Sensor - Test"
4783–19 DPF #1 Mean Soot Signal : Data Error	3397–19 DPF #1 Soot Loading Sensor : Special Instruction	Troubleshooting, "Soot Sensor - Test"
4783-21 DPF #1 Mean Soot Signal : Data Drifted Low	3397-21 DPF #1 Soot Loading Sensor : Data Drifted Low	Troubleshooting, "Soot Sensor - Test"
5423–5 Aftertreatment #1 Fuel Pump Relay Control : Current Below Normal	3427–5 Aftertreatment Fuel Pump Relay : Current Below Normal	Troubleshooting, "ARD Fuel Supply - Test"
5423–6 Aftertreatment #1 Fuel Pump Relay Control : Current Above Normal	3427–6 Aftertreatment Fuel Pump Relay : Current Above Normal	Troubleshooting, "ARD Fuel Supply - Test"
5495–14 Aftertreatment #1 DPF Soot Mean Calibration Offset : Special Instruction	3397–14 DPF #1 Soot Loading Sensor : Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"
5576–2 Aftertreatment #1 Identification : Erratic, Intermittent, or Incorrect	3468–2 Aftertreatment #1 Identification Number Module : Erratic, Intermittent, or Incorrect	Troubleshooting, "Aftertreatment Identification Module - Test"
5576–8 Aftertreatment #1 Identification : Abnormal Frequency, Pulse Width, or Period	3468–8 Aftertreatment #1 Identification Number Module : Abnormal Frequency, Pulse Width, or Period	Troubleshooting, "Aftertreatment Identification Module - Test"
5576–14 Aftertreatment #1 Identification : Special Instruction	3468–14 Aftertreatment #1 Identification Number Module : Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"

Diagnostic Trouble Codes in Cat Data Link (CDL) Code Order

Table 2 lists the diagnostic trouble codes that apply to the engine. The codes are listed in CDL code order. Use the electronic service tool to determine the codes that are active or logged. Then refer to the appropriate troubleshooting procedure for more information.

Show/hide table

Table 2
List of Diagnostic Trouble Codes
CDL Code and Description	J1939 Code and Description	Troubleshooting Procedure
1–2 Cylinder #1 Injector : Erratic, Intermittent or Incorrect	651–2 Engine Injector Cylinder #01 : Erratic, Intermittent or Incorrect	Troubleshooting, "Injector Data Incorrect - Test"
1–5 Cylinder #1 Injector : Current Below Normal	651–5 Engine Injector Cylinder #01 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
1–6 Cylinder #1 Injector : Current Above Normal	651–6 Engine Injector Cylinder #01 : Current Above Normal	Troubleshooting, "Injector Solenoid - Test"
2–2 Cylinder #2 Injector : Erratic, Intermittent or Incorrect	652–2 Engine Injector Cylinder #02 : Erratic, Intermittent or Incorrect	Troubleshooting, "Injector Data Incorrect - Test"
2–5 Cylinder #2 Injector : Current Below Normal	652–5 Engine Injector Cylinder #02 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
2–6 Cylinder #2 Injector : Current Above Normal	652–6 Engine Injector Cylinder #02 : Current Above Normal	Troubleshooting, "Injector Solenoid - Test"
3–2 Cylinder #3 Injector : Erratic, Intermittent or Incorrect	653–2 Engine Injector Cylinder #03 : Erratic, Intermittent or Incorrect	Troubleshooting, "Injector Data Incorrect - Test"
3–5 Cylinder #3 Injector : Current Below Normal	653–5 Engine Injector Cylinder #03 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
3–6 Cylinder #3 Injector : Current Above Normal	653–6 Engine Injector Cylinder #03 : Current Above Normal	Troubleshooting, "Injector Solenoid - Test"
4–2 Cylinder #4 Injector : Erratic, Intermittent or Incorrect	654–2 Engine Injector Cylinder #04 : Erratic, Intermittent or Incorrect	Troubleshooting, "Injector Data Incorrect - Test"
4–5 Cylinder #4 Injector : Current Below Normal	654–5 Engine Injector Cylinder #04 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
4–6 Cylinder #4 Injector : Current Above Normal	654–6 Engine Injector Cylinder #04 : Current Above Normal	Troubleshooting, "Injector Solenoid - Test"
5–2 Cylinder #5 Injector : Erratic, Intermittent or Incorrect	655–2 Engine Injector Cylinder #05 : Erratic, Intermittent or Incorrect	Troubleshooting, "Injector Data Incorrect - Test"
5–5 Cylinder #5 Injector : Current Below Normal	655–5 Engine Injector Cylinder #05 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
5–6 Cylinder #5 Injector : Current Above Normal	655–6 Engine Injector Cylinder #05 : Current Above Normal	Troubleshooting, "Injector Solenoid - Test"
6–2 Cylinder #6 Injector : Erratic, Intermittent or Incorrect	656–2 Engine Injector Cylinder #06 : Erratic, Intermittent or Incorrect	Troubleshooting, "Injector Data Incorrect - Test"
6–5 Cylinder #6 Injector : Current Below Normal	656–5 Engine Injector Cylinder #06 : Current Below Normal	Troubleshooting, "Injector Solenoid - Test"
6–6 Cylinder #6 Injector : Current Above Normal	656–6 Engine Injector Cylinder #06 : Current Above Normal	Troubleshooting, "Injector Solenoid - Test"
18–5 Fuel Control Valve : Current Below Normal	1076–5 Engine Fuel Injection Pump Fuel Control Valve : Current Below Normal	Troubleshooting, "Solenoid Valve - Test"
18–6 Fuel Control Valve : Current Below Normal	1076–6 Engine Fuel Injection Pump Fuel Control Valve : Current Above Normal	Troubleshooting, "Solenoid Valve - Test"
41–3 8 Volt DC Supply : Voltage Above Normal	678–3 ECU 8 Volts DC Supply : Voltage Above Normal	Troubleshooting, "Sensor Supply - Test"
41–4 8 Volt DC Supply : Voltage Below Normal	678–4 ECU 8 Volts DC Supply : Voltage Below Normal	Troubleshooting, "Sensor Supply - Test"
91–2 Throttle Position Sensor : Erratic, Intermittent, or Incorrect	91–2 Accelerator Pedal Position #1 : Erratic, Intermittent, or Incorrect	Troubleshooting, "Switch Circuits - Test" or Troubleshooting, "Speed Control (Analog) - Test"
91–3 Throttle Position Sensor : Voltage Above Normal	91–3 Accelerator Pedal Position #1 : Voltage Above Normal	Troubleshooting, "Speed Control (Analog) - Test" or Troubleshooting, "Speed Control (PWM) - Test"
91–4 Throttle Position Sensor : Voltage Below Normal	91–4 Accelerator Pedal Position #1 : Voltage Below Normal	Troubleshooting, "Speed Control (Analog) - Test" or Troubleshooting, "Speed Control (PWM) - Test"
91–8 Throttle Position Sensor : Abnormal Frequency, Pulse Width, or Period	91–8 Accelerator Pedal Position #1 : Abnormal Frequency, Pulse Width, or Period	Troubleshooting, "Speed Control (PWM) - Test"
100–3 Engine Oil Pressure Sensor : Voltage Above Normal	100–3 Engine Oil Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
100–4 Engine Oil Pressure Sensor : Voltage Below Normal	100–4 Engine Oil Pressure : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
100–21 Engine Oil Pressure Sensor : Data Drifted Low	100–21 Engine Oil Pressure : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
110–3 Engine Coolant Temperature Sensor : Voltage Above Normal	110–3 Engine Coolant Temperature : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
110–4 Engine Coolant Temperature Sensor : Voltage Below Normal	110–4 Engine Coolant Temperature : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
158–2 Keyswitch Battery Potential : Erratic, Intermittent, or Incorrect	1834–2 Ignition Key Switch loss of signal	Troubleshooting, "Electrical Power Supply - Test"
168–2 Electrical System Voltage : Erratic, Intermittent or Incorrect	168–2 Battery Potential / Power Input #1 : Erratic, Intermittent or Incorrect	Troubleshooting, "Electrical Power Supply - Test"
168–3 Electrical System Voltage : Voltage Above Normal	168–3 Battery Potential / Power Input #1 : Voltage Above Normal	Troubleshooting, "Electrical Power Supply - Test"
168–4 Electrical System Voltage : Voltage Below Normal	168–4 Battery Potential / Power Input #1 : Voltage Below Normal	Troubleshooting, "Electrical Power Supply - Test"
172–3 Intake Manifold Air Temperature Sensor Voltage Above Normal:	105–3 Engine Intake Manifold #1 Temperature : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
172–4 Intake Manifold Air Temperature Sensor Voltage Below Normal:	105–4 Engine Intake Manifold #1 Temperature : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
174–3 Fuel Temperature Sensor : Voltage Above Normal	174–3 Engine Fuel Temperature 1 : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
174–4 Fuel Temperature Sensor : Voltage Below Normal	174–4 Engine Fuel Temperature 1 : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
190–8 Engine Speed Sensor : Abnormal Frequency, Pulse Width, or Period	190–8 Engine Speed : Abnormal Frequency, Pulse Width, or Period	Troubleshooting, "Speed/Timing - Test"
247–9 SAE J1939 Data Link : Abnormal Update Rate	639–9 J1939 Network #1 : Abnormal Update Rate	Troubleshooting, "CAN Data Link - Test"
247–14 SAE J1939 Data Link : Special Instruction	639–14 J1939 Network #1 : Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"
253–2 Personality Module : Erratic, Intermittent, or Incorrect	631–2 Calibration Module : Erratic, Intermittent, or Incorrect	Troubleshooting, "ECM Software - Install"
261–11 Engine Timing Offset fault	637–11 Engine Timing Sensor : Other Failure Mode	Troubleshooting, "Timing - Calibrate"
262–3 5 Volt Sensor DC Power Supply : Voltage Above Normal	3509–3 Sensor Supply Voltage 1 : Voltage Above Normal	Troubleshooting, "Sensor Supply - Test"
262–4 5 Volt Sensor DC Power Supply : Voltage Below Normal	3509–4 Sensor Supply Voltage 1 : Voltage Below Normal	Troubleshooting, "Sensor Supply - Test"
267–3 Remote Shutdown Input : Voltage Above Normal	4215–3 Ground-Level Shutdown Activated : Voltage Above Normal	Troubleshooting, "Shutdown (Ground Level) - Test"
267–4 Remote Shutdown Input : Voltage Below Normal	4215–4 Ground-Level Shutdown Activated : Voltage Below Normal	Troubleshooting, "Shutdown (Ground Level) - Test"
268-2 Programmed Parameter Fault : Erratic, Intermittent, or Incorrect	630-2 Calibration Memory : Erratic, Intermittent, or Incorrect	Troubleshooting, "Configuration Parameters"
274–3 Atmospheric Pressure Sensor : Voltage Above Normal	108–3 Barometric Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
274–4 Atmospheric Pressure Sensor : Voltage Below Normal	108–4 Barometric Pressure : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
274–13 Atmospheric Pressure Sensor : Calibration Required	108–13 Barometric Pressure : Calibration Required	Troubleshooting, "Sensor Calibration Required - Test"
274–21 Atmospheric Pressure Sensor : Data Drifted Low	108–21 Barometric Pressure : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
291–5 Engine Cooling Fan Solenoid : Current Below Normal	4212–5 Fan Drive Bypass Command Status : Current Below Normal	Troubleshooting, "Cooling Fan Control - Test"
291–5 Engine Cooling Fan Solenoid : Current Below Normal	1071–5 Cooling Fan Drive Output : Current Below Normal	Troubleshooting, "Cooling Fan Control - Test"
291–6 Engine Cooling Fan Solenoid : Current Above Normal	4212–6 Fan Drive Bypass Command Status : Current Above Normal	Troubleshooting, "Cooling Fan Control - Test"
291–6 Engine Cooling Fan Solenoid : Current Above Normal	1071–6 Cooling Fan Drive Output : Current Above Normal	Troubleshooting, "Cooling Fan Control - Test"
342–8 Secondary Engine Speed Sensor : Abnormal Frequency, Pulse Width, or Period	723–8 Engine Speed Sensor #2 : Abnormal Frequency, Pulse Width, or Period	Troubleshooting, "Speed/Timing - Test"
444–5 Starter Motor Relay : Current Below Normal	677–5 Engine Starter Motor Relay : Current Below Normal	Troubleshooting, "Solenoid Valve - Test"
444–6 Starter Motor Relay : Current Above Normal	677–6 Engine Starter Motor Relay : Current Above Normal	Troubleshooting, "Solenoid Valve - Test"
485–5 Engine Fan Reversing Solenoid : Current Below Normal	4214–5 Engine Fan Reverse Actuator : Current Below Normal	Troubleshooting, "Cooling Fan Reversing - Test"
485–6 Engine Fan Reversing Solenoid : Current Above Normal	4214–6 Engine Fan Reverse Actuator : Current Above Normal	Troubleshooting, "Cooling Fan Reversing - Test"
526–5 Turbo Wastegate Drive : Current Below Normal	1188–5 Engine Turbocharger #1 Wastegate Drive : Current Below Normal	Troubleshooting, "Solenoid Valve - Test"
526–6 Turbo Wastegate Drive : Current Above Normal	1188–6 Engine Turbocharger #1 Wastegate Drive : Current Above Normal	Troubleshooting, "Solenoid Valve - Test"
535–3 Exhaust Temperature Sensor : Voltage Above Normal	3241–3 Exhaust Gas Temperature 1 : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
535–4 Exhaust Temperature Sensor : Voltage Below Normal	3241–4 Exhaust Gas Temperature 1 : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
549-2 Throttle Lock Enable Switch : Erratic, Intermittent, or Incorrect	-	Troubleshooting, "Throttle Lock - Test"
549-3 Throttle Lock Enable Switch : Voltage Above Normal	-	Troubleshooting, "Throttle Lock - Test"
549-4 Throttle Lock Enable Switch : Voltage Below Normal	-	Troubleshooting, "Throttle Lock - Test"
562-9 Caterpillar Monitor System : Abnormal Update Rate	-	Troubleshooting, "CAN Data Link - Test"
562-14 Caterpillar Monitor System : Special Instruction	-	Troubleshooting, "Data Link Configuration Status - Test"
596-9 Implement Control : Abnormal Update Rate	-	Troubleshooting, "CAN Data Link - Test"
596-14 Implement Control : Special Instruction	-	Troubleshooting, "Data Link Configuration Status - Test"
600–3 Hydraulic Oil Temperature Sensor : Voltage Above Normal	1638–3 Hydraulic Temperature : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
600–4 Hydraulic Oil Temperature Sensor : Voltage Below Normal	1638–4 Hydraulic Temperature : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
774–2 Secondary Throttle Position Sensor : Erratic, Intermittent, or Incorrect	29–2 Accelerator Pedal Position #2 : Erratic, Intermittent, or Incorrect	Troubleshooting, "Switch Circuits - Test" or Troubleshooting, "Speed Control (Analog) - Test"
774–3 Secondary Throttle Position Sensor : Voltage Above Normal	29–3 Accelerator Pedal Position #2 : Voltage Above Normal	Troubleshooting, "Speed Control (Analog) - Test" or Troubleshooting, "Speed Control (PWM) - Test"
774–4 Secondary Throttle Position Sensor : Voltage Below Normal	29–4 Accelerator Pedal Position #2 : Voltage Below Normal	Troubleshooting, "Speed Control (Analog) - Test" or Troubleshooting, "Speed Control (PWM) - Test"
774–8 Secondary Throttle Position Sensor : Abnormal Frequency, Pulse Width, or Period	29–8 Accelerator Pedal Position #2 : Abnormal Frequency, Pulse Width, or Period	Troubleshooting, "Speed Control (PWM) - Test"
1090–5 Particulate Trap Lamp Command : Current Below Normal	3697–5 Particulate Trap Lamp Command : Current Below Normal	Troubleshooting, "Indicator Lamp - Test"
1090–6 Particulate Trap Lamp Command : Current Above Normal	3697–6 Particulate Trap Lamp Command : Current Above Normal	Troubleshooting, "Indicator Lamp - Test"
1091–5 Exhaust System High Temperature Lamp Command : Current Below Normal	3698–5 Exhaust System High Temperature Lamp Command : Current Below Normal	Troubleshooting, "Indicator Lamp - Test"
1091–6 Exhaust System High Temperature Lamp Command : Current Above Normal	3698–6 Exhaust System High Temperature Lamp Command : Current Above Normal	Troubleshooting, "Indicator Lamp - Test"
1551–13 Engine Demand Fan System : Out of Calibration	4212–13 Fan Drive Bypass Command Status : Out of Calibration	Troubleshooting, "Cooling Fan - Calibrate"
1603-14 Machine Control Module : Special Instruction	-	Troubleshooting, "Data Link Configuration Status - Test"
1634-2 Idle Validation Switch #1 : Erratic, Intermittent or Incorrect	558-2 Accelerator Pedal #1 Low Idle Switch : Erratic, Intermittent or Incorrect	Troubleshooting, "Idle Validation - Test"
1635-2 Accelerator Pedal 1 Low Idle Switch : Erratic, Intermittent, or Incorrect	2970–2 Accelerator Pedal 2 Low Idle Switch : Erratic, Intermittent or Incorrect	Troubleshooting, "Idle Validation - Test"
1639–2 Machine Security System Module : Erratic, Intermittent or Incorrect	1196–2 Anti-theft Component Status States : Erratic, Intermittent or Incorrect	Troubleshooting, "CAN Data Link - Test"
1639–9 Machine Security System Module : Abnormal Update Rate	1196–9 Anti-theft Component Status States : Abnormal Update Rate	Troubleshooting, "CAN Data Link - Test"
1743–2 Engine Operation Mode Selector Switch : Erratic, Intermittent or Incorrect	2882-2 Engine Alternate Rating Select : Erratic, Intermittent or Incorrect	Troubleshooting, "Mode Selection - Test"
1785–3 Intake Manifold Pressure Sensor : Voltage Above Normal	3563–3 Engine Intake Manifold #1 Absolute Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
1785–4 Intake Manifold Pressure Sensor : Voltage Below Normal	3563–4 Engine Intake Manifold #1 Absolute Pressure : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
1785–13 Intake Manifold Pressure Sensor : Out of Calibration	3563–13 Engine Intake Manifold #1 Absolute Pressure : Out of Calibration	Troubleshooting, "Sensor Calibration Required - Test"
1785–21 Intake Manifold Pressure Sensor : Data Drifted Low	3563–21 Engine Intake Manifold #1 Absolute Pressure : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
1797-3 Fuel Rail Pressure Sensor : Voltage Above Normal	157-3 Engine Injector Metering Rail #1 Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
1797-4 Fuel Rail Pressure Sensor : Voltage Below Normal	157-4 Engine Injector Metering Rail #1 Pressure : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
2131–3 5 Volt Sensor DC Power Supply #2 : Voltage Above Normal	3510–3 Sensor Supply Voltage 2 : Voltage Above Normal	Troubleshooting, "Sensor Supply - Test"
2131–4 5 Volt Sensor DC Power Supply #2 : Voltage Below Normal	3510–4 Sensor Supply Voltage 2 : Voltage Below Normal	Troubleshooting, "Sensor Supply - Test"
2246–6 Glow Plug Start Aid Relay : Current Below Normal	676–6 Engine Glow Plug Relay : Current Below Normal	Troubleshooting, "Glow Plug Starting Aid - Test"
2348–9 SAE J1939 Data Link #2 : Abnormal Update Rate	1231–9 J1939 Network #2 : Abnormal Update Rate	Troubleshooting, "CAN Data Link - Test"
2348–14 SAE J1939 Data Link #2: Special Instruction	1231–14 J1939 Network #2 : Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"
2417–5 Ether Injection Control Solenoid : Current Below Normal	291–5 Engine Start Enable Device 1 : Current Below Normal	Troubleshooting, "Ether Starting Aid - Test"
2417–5 Ether Injection Control Solenoid : Current Below Normal	626–5 Engine Start Enable Device 1 : Current Below Normal	Troubleshooting, "Ether Starting Aid - Test"
2417–6 Ether Injection Control Solenoid : Current Above Normal	291–6 Engine Start Enable Device 1 : Current Above Normal	Troubleshooting, "Ether Starting Aid - Test"
2417–6 Ether Injection Control Solenoid : Current Above Normal	626–6 Engine Start Enable Device 1 : Current Above Normal	Troubleshooting, "Ether Starting Aid - Test"
2452–3 DPF #1 Intake Temperature Sensor : Voltage Above Normal	3242–3 Aftertreatment #1 DPF Intake Temperature : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
2452–4 DPF #1 Intake Temperature Sensor : Voltage Below Normal	3242–4 Aftertreatment #1 DPF Intake Temperature : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
2458–3 DPF #1 Differential Pressure Sensor : Voltage Above Normal	3251–3 Aftertreatment #1 DPF Differential Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
2458–4 DPF #1 Differential Pressure Sensor : Voltage Below Normal	3251–4 Aftertreatment #1 DPF Differential Pressure : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
2458–13 DPF #1 Differential Pressure Sensor : Out of Calibration	3251–13 Aftertreatment #1 DPF Differential Pressure : Out of Calibration	Troubleshooting, "Sensor Calibration Required - Test"
2460–3 ARD Fuel Pressure #1 Sensor : Voltage Above Normal	3480–3 Aftertreatment #1 Fuel Pressure #1 : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
2460–4 ARD Fuel Pressure #1 Sensor : Voltage Below Normal	3480–4 Aftertreatment #1 Fuel Pressure #1 : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
2461–5 ARD Fuel Pressure #1 Control : Current Below Normal	3479–5 Aftertreatment #1 Fuel Pressure Control : Current Below Normal	Troubleshooting, "Solenoid Valve - Test"
2461–6 ARD Fuel Pressure #1 Control : Current Above Normal	3479–6 Aftertreatment #1 Fuel Pressure Control : Current Above Normal	Troubleshooting, "Solenoid Valve - Test"
2465–5 Aftertreatment #1 Ignition Transformer Primary : Current Below Normal	3484–5 Aftertreatment #1 Ignition : Current Below Normal	Troubleshooting, "ARD Ignition - Test"
2465–6 Aftertreatment #1 Ignition Transformer Primary : Current Above Normal	3484–6 Aftertreatment #1 Ignition : Current Above Normal	Troubleshooting, "ARD Ignition - Test"
2489–5 ARD Air Pressure Control Actuator : Current Below Normal	3487–5 Aftertreatment #1 Air Pressure Control : Current Below Normal	Troubleshooting, "Motorized Valve - Test"
2489–6 ARD Air Pressure Control Actuator : Current Above Normal	3487–6 Aftertreatment #1 Air Pressure Control : Current Above Normal	Troubleshooting, "Motorized Valve - Test"
2489–7 ARD Air Pressure Control Actuator not responding properly	3487–7 Aftertreatment #1 Air Pressure Control : Not Responding Properly	Troubleshooting, "Motorized Valve - Test"
2490–3 ARD Air Pressure Control Actuator Position Sensor : Voltage Above Normal	3488–3 Aftertreatment #1 Air Pressure Actuator Position : Voltage Above Normal	Troubleshooting, "Valve Position - Test"
2490–4 ARD Air Pressure Control Actuator Position Sensor : Voltage Below Normal	3488–4 Aftertreatment #1 Air Pressure Actuator Position : Voltage Below Normal	Troubleshooting, "Valve Position - Test"
2526–3 Air Inlet Temperature Sensor : Voltage Above Normal	172–3 Engine Air Inlet Temperature : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
2526–4 Air Inlet Temperature Sensor : Voltage Below Normal	172–4 Engine Air Inlet Temperature : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
2738–3 Turbocharger #1 Compressor Inlet Pressure Sensor : Voltage Above Normal	1176–3 Engine Turbocharger #1 Compressor Inlet Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
2738–4 Turbocharger #1 Compressor Inlet Pressure Sensor : Voltage Below Normal	1176–4 Engine Turbocharger #1 Compressor Inlet Pressure : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
2770-3 Throttle Lock Resume/Decel Switch : Voltage Above Normal	-	Troubleshooting, "Throttle Lock - Test"
2770-4 Throttle Lock Resume/Decel Switch : Voltage Below Normal	-	Troubleshooting, "Throttle Lock - Test"
2771-3 Throttle Lock Set/Accel Switch : Voltage Above Normal	-	Troubleshooting, "Throttle Lock - Test"
2771-4 Throttle Lock Set/Accel Switch : Voltage Below Normal	-	Troubleshooting, "Throttle Lock - Test"
3180–5 Aftertreatment #1 Ignition Transformer Secondary : Current Below Normal	4265–5 Aftertreatment #1 Transformer Secondary Output : Current Below Normal	Troubleshooting, "ARD Ignition - Test"
3180–6 Aftertreatment #1 Ignition Transformer Secondary : Current Above Normal	4265–6 Aftertreatment #1 Transformer Secondary Output : Current Above Normal	Troubleshooting, "ARD Ignition - Test"
3182–5 Aftertreatment #1 Fuel Injector #1 Heater : Current Below Normal	4301–5 Aftertreatment #1 Fuel Injector #1 Heater Control : Current Below Normal	Troubleshooting, "Solenoid Valve - Test"
3182–6 Aftertreatment #1 Fuel Injector #1 Heater : Current Above Normal	4301–6 Aftertreatment #1 Fuel Injector #1 Heater Control : Current Above Normal	Troubleshooting, "Solenoid Valve - Test"
3183-2 DPF Regeneration Force Switch : Erratic, Intermittent or Incorrect	3696–2 Particulate Trap Regeneration Force Switch : Erratic, Intermittent or Incorrect	The Forced Regeneration Switch signal is not recognized by the ECM. The switch may not be configured correctly for the application or there is a problem with the connected module.
3184-2 DPF Regeneration Inhibit Switch : Erratic, Intermittent, or Incorrect	3695–2 Particulate Trap Regeneration Inhibit Switch : Erratic, Intermittent, or Incorrect	The Forced Regeneration Switch is installed and the disable regeneration switch is held for longer than 1 minute. Alternatively, the Forced Regeneration Switch is NOT installed and the disable regeneration input through the Datalink is received for longer than 1 minute.
3372–3 Engine Charge Air Cooler #1 Outlet Temperature Sensor : Voltage Above Normal	2630–3 Engine Charge Air Cooler Outlet Temperature : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
3372–4 Engine Charge Air Cooler #1 Outlet Temperature Sensor : Voltage Below Normal	2630–4 Engine Charge Air Cooler Outlet Temperature : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
3385–3 EGR Intake Pressure Sensor : Voltage Above Normal	3358–3 EGR Inlet Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3385–4 EGR Intake Pressure Sensor : Voltage Below Normal	3358–4 EGR Inlet Pressure : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3385–13 EGR Intake Pressure Sensor : Out of Calibration	3358–13 EGR Inlet Pressure : Out of Calibration	Troubleshooting, "Sensor Calibration Required - Test"
3385–21 EGR Intake Pressure Sensor : Data Drifted Low	3358–21 EGR Inlet Pressure : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
3386–3 EGR Temperature Sensor : Voltage Above Normal	412–3 EGR Temperature : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
3386–4 EGR Temperature Sensor : Voltage Below Normal	412–4 EGR Temperature : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Passive) - Test"
3387–3 EGR Differential Pressure Sensor : Voltage Above Normal	411–3 EGR Differential Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3387–4 EGR Differential Pressure Sensor : Voltage Below Normal	411–4 EGR Differential Pressure : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3387–13 EGR Differential Pressure Sensor : Out of Calibration	411–13 EGR Differential Pressure : Out of Calibration	Troubleshooting, "Sensor Calibration Required - Test"
3397-2 DPF #1 Soot Loading Sensor : Erratic, Intermittent or Incorrect	4783-2 DPF #1 Mean Soot Signal : Erratic, Intermittent or Incorrect	Troubleshooting, "Soot Sensor - Test"
3397-3 DPF #1 Soot Loading Sensor : Voltage Above Normal	4783-3 DPF #1 Mean Soot Signal : Voltage Above Normal	Troubleshooting, "Soot Sensor - Test"
3397-4 DPF #1 Soot Loading Sensor : Voltage Below Normal	4783-4 DPF #1 Mean Soot Signal : Voltage Below Normal	Troubleshooting, "Soot Sensor - Test"
3397-9 DPF #1 Soot Loading Sensor : Abnormal Update Rate	4783-9 DPF #1 Mean Soot Signal : Abnormal Update Rate	Troubleshooting, "Soot Sensor - Test"
3397-12 DPF #1 Soot Loading Sensor : Failure	4783-12 DPF #1 Mean Soot Signal : Failure	Troubleshooting, "Soot Sensor - Test"
3397-13 DPF #1 Soot Loading Sensor : Calibration Required	4783-13 DPF #1 Mean Soot Signal : Calibration Required	Troubleshooting, "Soot Sensor - Test"
3397-14 DPF #1 Soot Loading Sensor : Special Instruction	4783-14 DPF #1 Mean Soot Signal : Special Instruction	Troubleshooting, "Soot Sensor - Test"
3397–14 DPF #1 Soot Loading Sensor : Special Instruction	5495–14 Aftertreatment #1 DPF Soot Mean Calibration Offset : Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"
3397-21 DPF #1 Soot Loading Sensor : Data Drifted Low	4783-21 DPF #1 Mean Soot Signal : Data Drifted Low	Troubleshooting, "Soot Sensor - Test"
3397–19 DPF #1 Soot Loading Sensor : Special Instruction	4783–19 DPF #1 Mean Soot Signal : Data Error	Troubleshooting, "Soot Sensor - Test"
3405–5 EGR Valve Control : Current Below Normal	2791–5 EGR Valve Control : Current Below Normal	Troubleshooting, "Motorized Valve - Test"
3405–6 EGR Valve Control : Current Above Normal	2791–6 EGR Valve Control : Current Above Normal	Troubleshooting, "Motorized Valve - Test"
3407–3 EGR Valve Position Sensor : Voltage Above Normal	27–3 EGR #1 Valve Position : Voltage Above Normal	Troubleshooting, "Valve Position - Test"
3407–4 EGR Valve Position Sensor : Voltage Below Normal	27–4 EGR #1 Valve Position : Voltage Below Normal	Troubleshooting, "Valve Position - Test"
3427–5 Aftertreatment Fuel Pump Relay : Current Below Normal	5423–5 Aftertreatment #1 Fuel Pump Relay Control : Current Below Normal	Troubleshooting, "ARD Fuel Supply - Test"
3427–6 Aftertreatment Fuel Pump Relay : Current Above Normal	5423–6 Aftertreatment #1 Fuel Pump Relay Control : Current Above Normal	Troubleshooting, "ARD Fuel Supply - Test"
3464–3 DPF #1 Intake Pressure Sensor : Voltage Above Normal	3609–3 DPF #1 Intake Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3464–4 DPF #1 Intake Pressure Sensor : Voltage Below Normal	3609–4 DPF #1 Intake Pressure : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3464–13 DPF #1 Intake Pressure Sensor : Out of Calibration	3609–13 DPF #1 Intake Pressure : Out of Calibration	Troubleshooting, "Sensor Calibration Required - Test"
3464–21 DPF #1 Intake Pressure Sensor : Data Drifted Low	3609–21 DPF #1 Intake Pressure : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
3468–2 Aftertreatment #1 Identification Number Module : Erratic, Intermittent, or Incorrect	5576–2 Aftertreatment #1 Identification : Erratic, Intermittent, or Incorrect	Troubleshooting, "Aftertreatment Identification Module - Test"
3468–8 Aftertreatment #1 Identification Number Module : Abnormal Frequency, Pulse Width, or Period	5576–8 Aftertreatment #1 Identification : Abnormal Frequency, Pulse Width, or Period	Troubleshooting, "Aftertreatment Identification Module - Test"
3468–14 Aftertreatment #1 Identification Number Module : Special Instruction	5576–14 Aftertreatment #1 Identification : Special Instruction	Troubleshooting, "Data Link Configuration Status - Test"
3485–3 Aftertreatment #1 Exhaust Gas Temperature #1 Sensor : Voltage Above Normal	3241–3 Exhaust Gas Temperature 1 : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3485–4 Aftertreatment #1 Exhaust Gas Temperature #1 Sensor : Voltage Below Normal	3241–4 Exhaust Gas Temperature 1 : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3493–3 Aftertreatment #1 Secondary Air Pressure Sensor : Voltage Above Normal	3837–3 Aftertreatment #1 Secondary Air Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3493–4 Aftertreatment #1 Secondary Air Pressure Sensor : Voltage Below Normal	3837–4 Aftertreatment #1 Secondary Air Pressure : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3493–13 Aftertreatment #1 Secondary Air Pressure Sensor : Out of Calibration	3837–13 Aftertreatment #1 Secondary Air Pressure : Out of Calibration	Troubleshooting, "Sensor Calibration Required - Test"
3493–21 Aftertreatment #1 Secondary Air Pressure Sensor : Data Drifted Low	3837–21 Aftertreatment #1 Secondary Air Pressure : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
3514–5 Engine Throttle Actuator Control Command : Current Below Normal	3464–5 Engine Throttle Actuator 1 Control Command : Current Below Normal	Troubleshooting, "Motorized Valve - Test"
3514–6 Engine Throttle Actuator Control Command : Current Above Normal	3464–6 Engine Throttle Actuator 1 Control Command : Current Above Normal	Troubleshooting, "Motorized Valve - Test"
3515–3 Engine Throttle Valve Position Sensor voltage above normal	51–3 Engine Throttle Position : Voltage Above Normal	Troubleshooting, "Valve Position - Test"
3515–4 Engine Throttle Valve Position Sensor voltage below normal	51–4 Engine Throttle Position : Voltage Below Normal	Troubleshooting, "Valve Position - Test"
3528–3 Barometric Pressure Sensor : Voltage Above Normal	108–3 Barometric Pressure : Voltage Above Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3528–4 Barometric Pressure Sensor : Voltage Below Normal	108–4 Barometric Pressure : Voltage Below Normal	Troubleshooting, "Sensor Signal (Analog, Active) - Test"
3528–21 Barometric Pressure Sensor : Data Drifted Low	108–21 Barometric Pressure : Data Drifted Low	Troubleshooting, "Sensor Supply - Test"
3547–3 Water in Fuel System Switch : Voltage Above Normal	97–3 Water In Fuel Indicator : Voltage Above Normal	Troubleshooting, "Water in Fuel - Test"
3666–5 Engine Fuel Supply Lift Pump Relay : Current Below Normal	1075–5 Engine Electric Lift Pump for Engine Fuel Supply : Current Below Normal	Troubleshooting, "Fuel Transfer Pump - Test"
3666–6 Engine Fuel Supply Lift Pump Relay : Current Below Normal	1075–6 Engine Electric Lift Pump for Engine Fuel Supply : Current Above Normal	Troubleshooting, "Fuel Transfer Pump - Test"