C9.3 Tier 4 Final Engines Caterpillar


Diagnostic Trouble Codes

Usage:

D6T 2B3
Table 1 lists the diagnostic trouble codes that apply to the engines that are covered in this manual. Use the Caterpillar Electronic Technician (ET) to determine the codes that are active or logged. Then refer to the appropriate troubleshooting procedure for more information.

Note: A requirement for all troubleshooting is that the troubleshooting is based on active and/or passive diagnostic trouble codes. Do not troubleshoot based on flash codes alone.

Portions of this material are reprinted with permission from SAE J1939DA_201607© 2016 SAE International, SAE International is not responsible for any use or translation of this material, in whole or in part. Please contact SAE International to obtain a complete copy of SAE J1939DA_201607, the official definitive source of this standard.

Table 1
List of Diagnostic Trouble Codes 
J1939 Code and Description  CDL Code and Description  Troubleshooting Procedure 
N/A  486-3
Engine Fan Reverse Switch : Voltage Above Normal 
Refer to the Machine Troubleshooting Guide 
N/A  486-4
Engine Fan Reverse Switch : Voltage Below Normal 
Refer to the Machine Troubleshooting Guide 
N/A  544-2
Engine Cooling Fan Speed Sensor : Erratic, Intermittent, or Incorrect 
Troubleshooting, "Cooling Fan Speed - Test" 
N/A  544-8
Engine Cooling Fan Speed Sensor : Abnormal Frequency, Pulse Width, or Period 
Troubleshooting, "Cooling Fan Speed - Test" 
N/A  1076-5
Engine Cooling Fan Bypass Solenoid : Current Below Normal 
Troubleshooting, "Cooling Fan Control - Test" 
N/A  1076-6
Engine Cooling Fan Bypass Solenoid : Current Above Normal 
Troubleshooting, "Cooling Fan Control - Test" 
N/A  1937-2
Engine Coolant Flow Switch : Erratic, Intermittent, or Incorrect 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" 
29-2
Accelerator Pedal Position 2 : Erratic, Intermittent, or Incorrect 
774-2
Secondary Throttle Position Sensor: Erratic, Intermittent, or Incorrect 
Troubleshooting, "Speed Control - Test" 
29-3
Accelerator Pedal Position 2 : Voltage Above Normal 
774-3
Secondary Throttle Position Sensor: Voltage Above Normal 
Troubleshooting, "Speed Control - Test" 
29-4
Accelerator Pedal Position 2 : Voltage Below Normal 
774-4
Secondary Throttle Position Sensor: Voltage Below Normal 
Troubleshooting, "Speed Control - 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 - Test" 
91-2
Accelerator Pedal Position 1 : Erratic, Intermittent, or Incorrect 
91-2
Throttle Position Sensor : Erratic, Intermittent, or Incorrect 
Troubleshooting, "Speed Control - Test" 
91-3
Accelerator Pedal Position 1 : Voltage Above Normal 
91-3
Throttle Position Sensor : Voltage Above Normal 
Troubleshooting, "Speed Control - Test" 
91-4
Accelerator Pedal Position 1 : Voltage Below Normal 
91-4
Throttle Position Sensor : Voltage Below Normal 
Troubleshooting, "Speed Control - 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 - 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" 
101-3
Engine Crankcase Pressure : Voltage Above Normal 
101-3
Crankcase Air Pressure Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
101-4
Engine Crankcase Pressure : Voltage Below Normal 
101-4
Crankcase Air Pressure Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
101-13
Engine Crankcase Pressure : Calibration Required 
101-13
Crankcase Air Pressure Sensor : Calibration Required 
Troubleshooting, "Sensor Calibration Required - Test" 
108-3
Barometric Pressure : Voltage Above Normal 
3528-3
Atmospheric Pressure Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
108-4
Barometric Pressure : Voltage Below Normal 
3528-4
Atmospheric Pressure Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
108-21
Barometric Pressure : Calibration Required 
3528-21
Atmospheric Pressure Sensor : Calibration Required 
Troubleshooting, "Sensor Supply - Test" 
109-3
Engine Coolant Pressure : Voltage Above Normal 
2302-3
Engine Coolant Pump Outlet Pressure Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
109-4
Engine Coolant Pressure : Voltage Below Normal 
2302-4
Engine Coolant Pump Outlet Pressure Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - 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" 
168-3
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" 
171-3
Ambient Air Temperature : Voltage Above Normal 
171-3
Ambient Air Temperature Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" 
171-4
Ambient Air Temperature : Voltage Below Normal 
171-4
Ambient Air Temperature Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - 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" 
175-3
Engine Oil Temperature 1 : Voltage Above Normal 
175-3
Engine Oil Temperature 1 : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" 
175-4
Engine Oil Temperature 1 : Voltage Below Normal 
175-4
Engine Oil Temperature 1 : 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" 
411-3
Engine Exhaust Gas Recirculation Differential Pressure : Voltage Above Normal 
3387-3
EGR Differential Pressure Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
411-4
Engine Exhaust Gas Recirculation Differential Pressure : Voltage Below Normal 
3387-4
EGR Differential Pressure Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
411-13
Engine Exhaust Gas Recirculation Differential Pressure : Calibration Required 
3387-13
EGR Differential Pressure Sensor : Calibration Required 
Troubleshooting, "Sensor Calibration Required - Test" 
412-3
Engine Exhaust Gas Recirculation Temperature : Voltage Above Normal 
3386-3
EGR Temperature Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" 
412-4
Engine Exhaust Gas Recirculation Temperature : Voltage Below Normal 
3386-4
EGR Temperature Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" 
441-3
Auxiliary Temperature #1 : Voltage Above Normal 
1836-3
Auxiliary Temperature Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
441-4
Auxiliary Temperature #1 : Voltage Below Normal 
1836-4
Auxiliary Temperature Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
442-3
Auxiliary Temperature #2 : Voltage Above Normal 
3683-3
Auxiliary Temperature Sensor #2 : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" 
442-4
Auxiliary Temperature #2 : Voltage Below Normal 
3683-4
Auxiliary Temperature Sensor #2 : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" 
597-3
Brake Switch : Voltage Above Normal 
298-3
Service Brake Pedal Switch : Voltage Above Normal 
Refer to the Machine Troubleshooting Guide 
597-4
Brake Switch : Voltage Below Normal 
298-4
Service Brake Pedal Switch : Voltage Below Normal 
Refer to the Machine Troubleshooting Guide 
625-14
Proprietary Data Link : Special Instruction 
246-14
Proprietary CAN Data Link: Special Instruction 
Troubleshooting, "Data Link Configuration Status - Test" 
626-5
Engine Start Enable Device 1 : Current Below Normal 
2417-5
Ether Injection Control Solenoid : Current Below Normal 
Troubleshooting, "Solenoid Valve - Test" 
626-6
Engine Start Enable Device 1 : Current Above Normal 
2417-6
Ether Injection Control Solenoid : Current Above Normal 
Troubleshooting, "Solenoid Valve - 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" 
637-13
Engine Timing Sensor : Calibration Required 
261-13
Engine Timing Calibration : Calibration Required 
Troubleshooting, "Timing - Calibrate" 
639-9
J1939 Network #1 : Abnormal Update Rate 
247-9
SAE J1939 Data Link : Abnormal Update Rate 
Troubleshooting, "Data Link - Test" 
639-14
J1939 Network #1 : Special Instruction 
247-14
SAE J1939 Data Link : Special Instruction 
Troubleshooting, "Data Link - Test" 
651-2
Engine Injector Cylinder #01 : Erratic, Intermittent, or Incorrect 
1-2
Cylinder #1 Injector : Erratic, Intermittent, or Incorrect 
Troubleshooting, "Injector Solenoid - 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" 
651-7
Engine Injector Cylinder #01 : Not Responding Properly 
1-7
Cylinder #1 Injector : Not Responding Properly 
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 Solenoid - 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" 
652-7
Engine Injector Cylinder #02 : Not Responding Properly 
2-7
Cylinder #2 Injector : Not Responding Properly 
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 Solenoid - 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" 
653-7
Engine Injector Cylinder #03 : Not Responding Properly 
3-7
Cylinder #3 Injector : Not Responding Properly 
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 Solenoid - 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" 
654-7
Engine Injector Cylinder #04 : Not Responding Properly 
4-7
Cylinder #4 Injector : Not Responding Properly 
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 Solenoid - 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" 
655-7
Engine Injector Cylinder #05 : Not Responding Properly 
5-7
Cylinder #5 Injector : Not Responding Properly 
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 Solenoid - 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" 
656-7
Engine Injector Cylinder #06 : Not Responding Properly 
6-7
Cylinder #6 Injector : Not Responding Properly 
Troubleshooting, "Injector Solenoid - 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" 
1074-5
Engine (Exhaust) Brake Output : Current Below Normal 
2232-5
Engine Retarder Solenoid : Current Below Normal 
Troubleshooting, "Solenoid Valve - Test" 
1074-6
Engine (Exhaust) Brake Output : Current Above Normal 
2232-6
Engine Retarder Solenoid : Current Above 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" 
1231-9
J1939 Network #2 : Abnormal Update Rate 
2348-9
SAE J1939 Data Link #2 : Abnormal Update Rate 
Troubleshooting, "Data Link - Test" 
1231-14
J1939 Network #2 : Special Instruction 
2348-14
SAE J1939 Data Link #2 : Special Instruction 
Troubleshooting, "Data Link - Test" 
1235-9
J1939 Network #3 : Abnormal Update Rate 
5856-9
SAE J1939 Data Link #3:Abnormal Update Rate 
Troubleshooting, "Data Link - Test" 
1235-14
J1939 Network #3 : Special Instruction 
5856-14
SAE J1939 Data Link #3: Special Instruction 
Troubleshooting, "Data Link - Test" 
1347-5
Engine Fuel Pump Pressurizing Assembly #1 : Current Below Normal 
1779-5
Fuel Rail #1 Pressure Valve Solenoid : Current Below Normal 
Troubleshooting, "Fuel Injection Pump - Test" 
1347-6
Engine Fuel Pump Pressurizing Assembly #1 : Current Above Normal 
1779-6
Fuel Rail #1 Pressure Valve Solenoid : Current Above Normal 
Troubleshooting, "Fuel Injection Pump - Test" 
1348-5
Engine Fuel Pump Pressurizing Assembly #2 : Current Below Normal 
1780-5
Fuel Rail #2 Pressure Valve Solenoid : Current Below Normal 
Troubleshooting, "Fuel Injection Pump - Test" 
1348-6
Engine Fuel Pump Pressurizing Assembly #2 : Current Above Normal 
1780-6
Fuel Rail #2 Pressure Valve Solenoid : Current Above Normal 
Troubleshooting, "Fuel Injection Pump - Test" 
1385-3
Auxiliary Temperature #1 : Voltage Above Normal 
1836-3
Auxiliary Temperature Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" 
1385-4
Auxiliary Temperature #1 : Voltage Below Normal 
1836-4
Auxiliary Temperature Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test" 
1387-3
Auxiliary Pressure #1 : Voltage Above Normal 
1835-3
Auxiliary Pressure Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
1387-4
Auxiliary Pressure #1 : Voltage Below Normal 
1835-4
Auxiliary Pressure Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
1761-3
Aftertreatment 1 Diesel Exhaust Fluid Tank Level : Voltage Above Normal 
3130-3
Aftertreatment #1 SCR Catalyst Reagent Tank #1 Level Sensor : Voltage Above Normal 
Troubleshooting, "DEF Tank Sensor - Test" 
1761-4
Aftertreatment 1 Diesel Exhaust Fluid Tank Level : Voltage Below Normal 
3130-4
Aftertreatment #1 SCR Catalyst Reagent Tank #1 Level Sensor : Voltage Below Normal 
Troubleshooting, "DEF Tank Sensor - 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
Engine Exhaust Gas Recirculation (EGR) Valve Control : Current Below Normal 
3405-5
EGR Valve Control : Current Below Normal 
Troubleshooting, "Solenoid Valve - Test" 
2791-6
Engine Exhaust Gas Recirculation (EGR) Valve Control : Current Above Normal 
3405-6
EGR Valve Control : Current Above Normal 
Troubleshooting, "Solenoid Valve - Test" 
2813-5
Engine Air Shutoff Command Status : Current Below Normal 
3239-5
Air Shutoff Relay : Current Below Normal 
Troubleshooting, "Air Shutoff - Test" 
2813-6
Engine Air Shutoff Command Status : Current Above Normal 
3239-6
Air Shutoff Relay : Current Above Normal 
Troubleshooting, "Air Shutoff - Test" 
2853-9
Communications Connection : Abnormal Update Rate 
N/A  Troubleshooting, "Data Link - Test" 
3031-3
Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature : Voltage Above Normal 
3134-3
Aftertreatment #1 SCR Catalyst Reagent Tank #1 Temperature Sensor : Voltage Above Normal 
Troubleshooting, "DEF Tank Sensor - Test" 
3031-4
Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature : Voltage Below Normal 
3134-4
Aftertreatment #1 SCR Catalyst Reagent Tank #1 Temperature Sensor : Voltage Below Normal 
Troubleshooting, "DEF Tank Sensor - Test" 
3216-11
Aftertreatment #1 Intake NOx : Other Failure Mode 
3655-11
Aftertreatment #1 Intake NOx Level Sensor : Other Failure Mode 
Troubleshooting, "Sensor (Data Link Type) - Test" 
3216-12
Aftertreatment #1 Intake NOx : Failure 
3655-12
Aftertreatment #1 Intake NOx Level Sensor : Failure 
Troubleshooting, "Sensor (Data Link Type) - Test" 
3226-11
Aftertreatment #1 Outlet NOx : Other Failure Mode 
3609-11
Aftertreatment #1 Outlet #1 NOx Level Sensor : Other Failure Mode 
Troubleshooting, "Sensor (Data Link Type) - Test" 
3226-12
Aftertreatment #1 Outlet NOx : Failure 
3609-12
Aftertreatment #1 Outlet #1 NOx Level Sensor : Failure 
Troubleshooting, "Sensor (Data Link Type) - 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 
3485-4
Aftertreatment #1 Exhaust Gas Temperature #1 Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
3242-3
Particulate Trap Intake Gas Temperature : Voltage Above Normal 
2452-3
DPF #1 Intake Temperature Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
3242-4
Particulate Trap Intake Gas Temperature : Voltage Below Normal 
2452-4
DPF #1 Intake Temperature Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
3251-2
Particulate Trap Differential Pressure : Erratic, Intermittent, or Incorrect 
2458-2
DPF #1 Differential Pressure Sensor : Erratic, Intermittent, or Incorrect 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
3251-3
Particulate Trap Differential Pressure : Voltage Above Normal 
2458-3
DPF #1 Differential Pressure Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
3251-4
Particulate Trap Differential Pressure : Voltage Below Normal 
2458-4
DPF #1 Differential Pressure Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
3251-13
Particulate Trap Differential Pressure : Out of Calibration 
2458-13
DPF #1 Differential Pressure Sensor : Out of Calibration 
Troubleshooting, "Sensor Calibration Required - Test" 
3358-3
Engine Exhaust Gas Recirculation Inlet Pressure : Voltage Above Normal 
3385-3
EGR Intake Pressure Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
3358-4
Engine Exhaust Gas Recirculation Inlet Pressure : Voltage Below Normal 
3385-4
EGR Intake Pressure Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
3358-13
Engine Exhaust Gas Recirculation Inlet Pressure : Calibration Required 
3385-13
EGR Intake Pressure Sensor : Calibration Required 
Troubleshooting, "Sensor Calibration Required - Test" 
3358-21
Engine Exhaust Gas Recirculation Inlet Pressure : Data Drifted Low 
3385-21
EGR Intake Pressure Sensor : Data Drifted Low 
Troubleshooting, "Sensor Supply - Test" 
3360-3
Aftertreatment 1 Diesel Exhaust Fluid Controller : Voltage Above Normal 
3820-3
Aftertreatment #1 Diesel Exhaust Fluid Controller : Voltage Above Normal 
Troubleshooting, "Electrical Power Supply - Test" 
3360-4
Aftertreatment 1 Diesel Exhaust Fluid Controller : Voltage Below Normal 
3820-4
Aftertreatment #1 Diesel Exhaust Fluid Controller : Voltage Below Normal 
Troubleshooting, "Electrical Power Supply - Test" 
3360-9
Aftertreatment #1 DEF Controller : Abnormal Update Rate 
3820-9
Aftertreatment #1 Diesel Exhaust Fluid Controller : Abnormal Update Rate 
Troubleshooting, "Data Link - Test" 
3360-12
Aftertreatment 1 Diesel Exhaust Fluid Controller : Failure 
3820-12
Aftertreatment #1 Diesel Exhaust Fluid Controller : Failure 
Troubleshooting, "Sensor (Data Link Type) - Test" 
3361-5
Catalyst Dosing Unit : Current Below Normal 
3821-5
Aftertreatment #1 Diesel Exhaust Fluid Dosing Valve Actuator : Current Below Normal 
Troubleshooting, "Solenoid Valve - Test" 
3361-6
Catalyst Dosing Unit : Current Above Normal 
3821-6
Aftertreatment #1 Diesel Exhaust Fluid Dosing Valve Actuator : Current Above Normal 
Troubleshooting, "Solenoid Valve - Test" 
3361-7
Catalyst Dosing Unit : Not Responding Properly 
3821-7
Aftertreatment #1 Diesel Exhaust Fluid Dosing Valve Actuator : Not Responding Properly 
Troubleshooting, "DEF Module Does Not Respond" 
3361-11
Catalyst Dosing Unit : Other Failure Mode 
3821-11
Aftertreatment #1 Diesel Exhaust Fluid Dosing Valve Actuator : Other Failure Mode 
Troubleshooting, "DEF Module Does Not Respond" 
3361-14
Catalyst Dosing Unit : Special Instruction 
3821-14
Aftertreatment #1 Diesel Exhaust Fluid Dosing Valve Actuator : Special Instruction 
Troubleshooting, "DEF Module Does Not Respond" 
3363-5
Aftertreatment 1 Diesel Exhaust Fluid Tank Heater : Current Below Normal 
3126-5
Aftertreatment #1 SCR Catalyst Reagent Tank #1 Heater Coolant Diverter Solenoid : Current Below Normal 
Troubleshooting, "Solenoid Valve - Test" 
3363-6
Aftertreatment 1 Diesel Exhaust Fluid Tank Heater : Current Above Normal 
3126-6
Aftertreatment #1 SCR Catalyst Reagent Tank #1 Heater Coolant Diverter Solenoid : Current Above Normal 
Troubleshooting, "Solenoid Valve - Test" 
3363-7
Aftertreatment 1 Diesel Exhaust Fluid Tank Heater : Not Responding Properly 
3126-7
Aftertreatment #1 SCR Catalyst Reagent Tank #1 Heater Coolant Diverter Solenoid : Not Responding Properly 
Troubleshooting, "DEF Temperature Is Low" 
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, "ARD Combustion Air - Test" 
3487-6
Aftertreatment #1 Air Pressure Control : Current Above Normal 
2489-6
ARD Air Pressure Control Actuator : Current Above Normal 
Troubleshooting, "ARD Combustion Air - Test" 
3487-13
Aftertreatment #1 Air Pressure Control : Out of Calibration 
2489-13
ARD Air Pressure Control Actuator : Out of Calibration 
Troubleshooting, "ARD Combustion Air Valve - Replace" 
3488-3
Aftertreatment #1 Air Pressure Actuator Position : Voltage Above Normal 
2490-3
ARD Air Pressure Control Actuator Position Sensor : Voltage Above Normal 
Troubleshooting, "ARD Combustion Air - 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, "ARD Combustion Air - 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" 
3511-11
Sensor Supply Voltage 3 : Other Failure Mode 
3482-11
Sensor Supply #3 : Other Failure Mode 
Troubleshooting, "DEF Pump Sensor Supply - Test" 
3516-12
Catalyst Reagent Concentration : Failure 
3100-12
Aftertreatment #1 SCR Catalyst Tank Reagent Quality Sensor : Failure 
Troubleshooting, "Sensor (Data Link Type) - 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 : Calibration Required 
1785-13
Intake Manifold Pressure Sensor : Calibration Required 
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 : Calibration Required 
3464-13
DPF #1 Intake Pressure Sensor : Calibration Required 
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" 
3659-5
Engine Injector Cylinder #1 Actuator #2 : Current Below Normal 
2602-5
Cylinder #1 Injector Actuator #2 : Current Below Normal 
Troubleshooting, "Injector Solenoid - Test" 
3659-6
Engine Injector Cylinder #1 Actuator #2 : Current Above Normal 
2602-6
Cylinder #1 Injector Actuator #2 : Current Above Normal 
Troubleshooting, "Injector Solenoid - Test" 
3660-5
Engine Injector Cylinder #2 Actuator #2 : Current Below Normal 
2604-5
Cylinder #2 Injector Actuator #2 : Current Below Normal 
Troubleshooting, "Injector Solenoid - Test" 
3660-6
Engine Injector Cylinder #2 Actuator #2 : Current Above Normal 
2604-6
Cylinder #2 Injector Actuator #2 : Current Above Normal 
Troubleshooting, "Injector Solenoid - Test" 
3661-5
Engine Injector Cylinder #3 Actuator #2 : Current Below Normal 
2606-5
Cylinder #3 Injector Actuator #2 : Current Below Normal 
Troubleshooting, "Injector Solenoid - Test" 
3661-6
Engine Injector Cylinder #3 Actuator #2 : Current Above Normal 
2606-6
Cylinder #3 Injector Actuator #2 : Current Above Normal 
Troubleshooting, "Injector Solenoid - Test" 
3662-5
Engine Injector Cylinder #4 Actuator #2 : Current Below Normal 
2608-5
Cylinder #4 Injector Actuator #2 : Current Below Normal 
Troubleshooting, "Injector Solenoid - Test" 
3662-6
Engine Injector Cylinder #4 Actuator #2 : Current Above Normal 
2608-6
Cylinder #4 Injector Actuator #2 : Current Above Normal 
Troubleshooting, "Injector Solenoid - Test" 
3663-5
Engine Injector Cylinder #5 Actuator #2 : Current Below Normal 
2610-5
Cylinder #5 Injector Actuator #2 : Current Below Normal 
Troubleshooting, "Injector Solenoid - Test" 
3663-6
Engine Injector Cylinder #5 Actuator #2 : Current Above Normal 
2610-6
Cylinder #5 Injector Actuator #2 : Current Above Normal 
Troubleshooting, "Injector Solenoid - Test" 
3664-5
Engine Injector Cylinder #6 Actuator #2 : Current Below Normal 
2612-5
Cylinder #6 Injector Actuator #2 : Current Below Normal 
Troubleshooting, "Injector Solenoid - Test" 
3664-6
Engine Injector Cylinder #6 Actuator #2 : Current Above Normal 
2612-6
Cylinder #6 Injector Actuator #2 : Current Above Normal 
Troubleshooting, "Injector Solenoid - 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 or 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 properly for the application or there is a problem with the module it is connected to. 
3697-5
Particulate Trap Lamp Command : Current Below Normal 
1090-5
N/A 
Troubleshooting, "Indicator Lamp - Test" 
3697-6
Particulate Trap Lamp Command : Current Above Normal 
1090-6
N/A 
Troubleshooting, "Indicator Lamp - Test" 
3698-5
Exhaust System High Temperature Lamp Command : Current Below Normal 
1091-5
N/A 
Troubleshooting, "Indicator Lamp - Test" 
3698-6
Exhaust System High Temperature Lamp Command : Current Above Normal 
1091-6
N/A 
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 : Calibration Required 
3493-13
Aftertreatment #1 Secondary Air Pressure Sensor : Calibration Required 
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" 
4077-3
Aftertreatment #1 Fuel Pressure #2 : Voltage Above Normal 
2497-3
ARD Fuel Pressure #2 Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
4077-4
Aftertreatment #1 Fuel Pressure #2 : Voltage Below Normal 
2497-4
ARD Fuel Pressure #2 Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - 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" 
4301-3
Aftertreatment #1 Fuel Injector #1 Heater Control : Voltage Above Normal 
3182-3
Aftertreatment #1 Fuel Injector #1 Heater : Voltage Above Normal 
Troubleshooting, "ARD Nozzle Heater - Test" 
4301-4
Aftertreatment #1 Fuel Injector #1 Heater Control : Voltage Below Normal 
3182-4
Aftertreatment #1 Fuel Injector #1 Heater : Voltage Below Normal 
Troubleshooting, "ARD Nozzle Heater - 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" 
4334-3
Aftertreatment 1 Diesel Exhaust Fluid Doser Absolute Pressure : Voltage Above Normal 
3090-3
Aftertreatment #1 SCR Dosing Reagent Pressure Sensor : Voltage Above Normal 
Troubleshooting, "DEF Pump Pressure Sensor - Test" 
4334-4
Aftertreatment 1 Diesel Exhaust Fluid Doser Absolute Pressure : Voltage Below Normal 
3090-4
Aftertreatment #1 SCR Dosing Reagent Pressure Sensor : Voltage Below Normal 
Troubleshooting, "DEF Pump Pressure Sensor - Test" 
4334-7
Aftertreatment 1 Diesel Exhaust Fluid Doser Absolute Pressure : Not Responding Properly 
3090-7
Aftertreatment #1 SCR Dosing Reagent Pressure Sensor : Not Responding Properly 
Troubleshooting, "DEF Pressure is Low" 
4337-8
Aftertreatment 1 Diesel Exhaust Fluid Dosing Temperature : Abnormal Frequency, Pulse Width, or Period 
3096-8
Aftertreatment #1 SCR Dosing Reagent Temperature #1 Sensor : Abnormal Frequency, Pulse Width, or Period 
Troubleshooting, "DEF Pump - Replace" 
4354-5
Aftertreatment 1 Diesel Exhaust Fluid Line Heater 1 : Current Below Normal 
3110-5
Aftertreatment #1 SCR Catalyst Reagent Line Heater #1 : Current Below Normal 
Troubleshooting, "DEF Line Heater - Test" 
4354-6
Aftertreatment 1 Diesel Exhaust Fluid Line Heater 1 : Current Above Normal 
3110-6
Aftertreatment #1 SCR Catalyst Reagent Line Heater #1 : Current Above Normal 
Troubleshooting, "DEF Line Heater - Test" 
4355-5
Aftertreatment 1 Diesel Exhaust Fluid Line Heater 2 : Current Below Normal 
3111-5
Aftertreatment #1 SCR Catalyst Reagent Line Heater #2 : Current Below Normal 
Troubleshooting, "DEF Line Heater - Test" 
4355-6
Aftertreatment 1 Diesel Exhaust Fluid Line Heater 2 : Current Above Normal 
3111-6
Aftertreatment #1 SCR Catalyst Reagent Line Heater #2 : Current Above Normal 
Troubleshooting, "DEF Line Heater - Test" 
4356-5
Aftertreatment 1 Diesel Exhaust Fluid Line Heater 3 : Current Below Normal 
3112-5
Aftertreatment #1 SCR Catalyst Reagent Line Heater #3 : Current Below Normal 
Troubleshooting, "DEF Line Heater - Test" 
4356-6
Aftertreatment 1 Diesel Exhaust Fluid Line Heater 3: Current Above Normal 
3112-6
Aftertreatment #1 SCR Catalyst Reagent Line Heater #3 : Current Above Normal 
Troubleshooting, "DEF Line Heater - Test" 
4360-3
Aftertreatment #1 SCR Catalyst Intake Gas Temperature : Voltage Above Normal 
3105-3
Aftertreatment #1 SCR Catalyst Intake Gas Temperature Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
4360-4
Aftertreatment #1 SCR Catalyst Intake Gas Temperature : Voltage Below Normal 
3105-4
Aftertreatment #1 SCR Catalyst Intake Gas Temperature Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
4374-5
Aftertreatment #1 Diesel Exhaust Fluid Pump Motor Speed : Current Below Normal 
3118-5
Aftertreatment #1 SCR Catalyst Reagent Pump Motor Speed Sensor : Current Below Normal 
Troubleshooting, "DEF Pump Motor - Test" 
4374-6
Aftertreatment #1 Diesel Exhaust Fluid Pump Motor Speed : Current Above Normal 
3118-6
Aftertreatment #1 SCR Catalyst Reagent Pump Motor Speed Sensor : Current Above Normal 
Troubleshooting, "DEF Pump Motor - Test" 
4374-8
Aftertreatment #1 Diesel Exhaust Fluid Pump Motor Speed : Abnormal Frequency, Pulse Width, or Period 
3118-8
Aftertreatment #1 SCR Catalyst Reagent Pump Motor Speed Sensor : Abnormal Frequency, Pulse Width, or Period 
Troubleshooting, "DEF Pump - Replace" 
4376-5
Aftertreatment 1 Diesel Exhaust Fluid Return Valve : Current Below Normal 
3862-5
Aftertreatment #1 Diesel Exhaust Fluid Return Valve Solenoid : Current Below Normal 
Troubleshooting, "DEF Return Valve - Test" 
4376-6
Aftertreatment 1 Diesel Exhaust Fluid Return Valve : Current Above Normal 
3862-6
Aftertreatment #1 Diesel Exhaust Fluid Return Valve Solenoid : Current Above Normal 
Troubleshooting, "DEF Return Valve - Test" 
4376-7
Aftertreatment 1 Diesel Exhaust Fluid Return Valve : Not Responding Properly 
3862-7
Aftertreatment #1 Diesel Exhaust Fluid Return Valve Solenoid : Not Responding Properly 
Troubleshooting, "DEF Pump - Replace" 
5276-5
Engine Exhaust Manifold Bank #1 Flow Balance Valve Actuator Control : Current Below Normal 
3409-5
Engine Exhaust Manifold Bank #1 Flow Balance Valve Solenoid : Current Below Normal 
Troubleshooting, "Solenoid Valve - Test" 
5276-6
Engine Exhaust Manifold Bank #1 Flow Balance Valve Actuator Control : Current Above Normal 
3409-6
Engine Exhaust Manifold Bank #1 Flow Balance Valve Solenoid : Current Above Normal 
Troubleshooting, "Solenoid Valve - Test" 
5423-5
Aftertreatment #1 Fuel Pump Relay Control : Current Below Normal 
3427-5
Aftertreatment Fuel Pump Relay : Current Below Normal 
Troubleshooting, "Solenoid Valve - Test" 
5423-6
Aftertreatment #1 Fuel Pump Relay Control : Current Above Normal 
3427-6
Aftertreatment Fuel Pump Relay : Current Above Normal 
Troubleshooting, "Solenoid Valve - Test" 
5424-5
Aftertreatment #1 Fuel Flow Diverter Valve Control : Current Below Normal 
3413-5
ARD Fuel Flow Diverter Actuator : Current Below Normal 
Troubleshooting, "Solenoid Valve - Test" 
5424-6
Aftertreatment #1 Fuel Flow Diverter Valve Control : Current Above Normal 
3413-6
ARD Fuel Flow Diverter Actuator : Current Above Normal 
Troubleshooting, "Solenoid Valve - Test" 
5425-5
Aftertreatment #1 Fuel Pressure #2 Actuator Control : Current Below Normal 
3391-5
ARD Fuel Pressure #2 Control Actuator : Current Below Normal 
Troubleshooting, "Solenoid Valve - Test" 
5425-6
Aftertreatment #1 Fuel Pressure #2 Actuator Control : Current Above Normal 
3391-6
ARD Fuel Pressure #2 Control Actuator : Current Above Normal 
Troubleshooting, "Solenoid Valve - Test" 
5491-5
Aftertreatment #1 DEF Line Heater Relay : Current Below Normal 
3822-5
Aftertreatment #1 Diesel Exhaust Fluid Line Heater Relay : Current Below Normal 
Troubleshooting, "DEF Line Heater - Test" 
5491-6
Aftertreatment #1 DEF Line Heater Relay : Current Above Normal 
3822-6
Aftertreatment #1 Diesel Exhaust Fluid Line Heater Relay : Current Above Normal 
Troubleshooting, "DEF Line Heater - 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" 
5577-2
Aftertreatment #2 Identification : Erratic, Intermittent, or Incorrect 
3469-2
Aftertreatment #2 Identification Number Module:Erratic, Intermittent, or Incorrect 
Troubleshooting, "Aftertreatment Identification Module - Test" 
5577-8
Aftertreatment #2 Identification : Abnormal Frequency, Pulse Width, or Period 
3469-8
Aftertreatment #2 Identification Number Module:Abnormal Frequency, Pulse Width, or Period 
Troubleshooting, "Aftertreatment Identification Module - Test" 
5577-14
Aftertreatment #2 Identification : Special Instruction 
3469-14
Aftertreatment #2 Identification Number Module:Special Instruction 
Troubleshooting, "Data Link Configuration Status - Test" 
5578-3
Engine Fuel Delivery Absolute Pressure : Voltage Above Normal 
289-3
Fuel Pressure Sensor - Before Fuel Filter : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
5578-4
Engine Fuel Delivery Absolute Pressure : Voltage Below Normal 
289-4
Fuel Pressure Sensor - Before Fuel Filter : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
5578-21
Engine Fuel Delivery Absolute Pressure : Data Drifted Low 
289-21
Fuel Pressure Sensor - Before Fuel Filter : Data Drifted Low 
Troubleshooting, "Sensor Supply - Test" 
5580-3
Engine Filtered Fuel Delivery Absolute Pressure : Voltage Above Normal 
460-3
Fuel Pressure Sensor - After Fuel Filter : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
5580-4
Engine Filtered Fuel Delivery Absolute Pressure : Voltage Below Normal 
460-4
Fuel Pressure Sensor - After Fuel Filter : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test" 
5580-21
Engine Filtered Fuel Delivery Absolute Pressure : Data Drifted Low 
460-21
Fuel Pressure Sensor - After Fuel Filter : Data Drifted Low 
Troubleshooting, "Sensor Supply - Test" 
5758-11
Aftertreatment #1 Intake Gas Sensor Power Supply : Other Failure Mode 
3621-11
Engine Exhaust NOx Level Sensor Power Supply : Other Failure Mode 
Troubleshooting, "Electrical Power Supply - Test" 
5759-11
Aftertreatment #1 Outlet Gas Sensor Power Supply : Other Failure Mode 
3619-11
Aftertreatment #1 Outlet #1 NOx Level Sensor Power Supply : Other Failure Mode 
Troubleshooting, "Electrical Power Supply - Test" 
5965-5
Aftertreatment 1 Diesel Exhaust Fluid Control Module Relay Control : Current Below Normal 
3838-5
Aftertreatment #1 Diesel Exhaust Fluid Dosing Control Module Relay : Current Below Normal 
Troubleshooting, "Solenoid Valve - Test" 
5965-6
Aftertreatment 1 Diesel Exhaust Fluid Control Module Relay Control : Current Above Normal 
3838-6
Aftertreatment #1 Diesel Exhaust Fluid Dosing Control Module Relay : Current Above Normal 
Troubleshooting, "Solenoid Valve - Test" 
5966-5
Aftertreatment 1 Diesel Exhaust Fluid Control Module Power Supply : Current Below Normal 
3965-5
Aftertreatment #1 Diesel Exhaust Fluid Control Module Power Supply #1 : Current Below Normal 
Troubleshooting, "DEF Control Module Power - Test" 
5966-6
Aftertreatment 1 Diesel Exhaust Fluid Control Module Power Supply : Current Above Normal 
3965-6
Aftertreatment #1 Diesel Exhaust Fluid Control Module Power Supply #1 : Current Above Normal 
Troubleshooting, "DEF Control Module Power - Test" 
6309-6
Aftertreatment #1 Diesel Exhaust Fluid Control Module Power Supply #2 : Current Above Normal 
3966-6
Aftertreatment #1 Diesel Exhaust Fluid Control Module Power Supply #2 : Current Above Normal 
Troubleshooting, "DEF Control Module Power - Test" 

Caterpillar Information System:

2012/05/14 New Flash Files Are Available for Certain Engines {1901, 1920}
C3.3B and C3.8 Engines for Caterpillar Built Machines Oil Pressure Is Low
C32 Marine Engines Coolant Level Sensor - Remove and Install
2012/05/07 A Procedure to Check Ash Build-up Within the Diesel Particulate Filter (DPF) Is Now Available {108F}
C175-16 Generator Set Refill Capacities
C7.1-XQ230 Rental Generator Set Setup
Inspection and Salvage of Front Wheel Spindles for Off-Highway Trucks {4201, 4205} Inspection and Salvage of Front Wheel Spindles for Off-Highway Trucks {4201, 4205}
C15 and C18 Tier 4 Final Engines DEF Dosing Control System
2012/05/07 An Improved Guide Spring and Valve Lifter Assembly Are Available in Certain C9 ACERT Engines {1209}
C3.3B and C3.8 Engines for Caterpillar Built Machines Fuel Rail Pressure Is Low
C3.3B and C3.8 Engines for Caterpillar Built Machines Engine Vibration Is Excessive
C3.3B and C3.8 Engines for Caterpillar Built Machines Engine Top Speed Is Not Obtained
C9.3 Tier 4 Final Engines Event Codes
2012/06/25 Obsolete Merlin Gerin CK and CM Frame Circuit Breaker Replacements Are Now Available {1420, 4461}
G3516C and G3516E Gas Engines Exhaust Manifold
C9.3 Tier 4 Final Engines Engine Cranks but Does Not Start
325 VM and VH Variable Gauge Undercarriage Final Drive - Disassemble
C32 Marine Engines Engine Oil Pressure Sensor - Remove and Install
2012/08/03 New Thermostats Are Now Used for Jacket Water Heater on Certain Cat Gensets and Cat Engines {1383}
C175-16 Engine for 795F Series AC Off-Highway Trucks Housing (Front)
2012/07/23 New Software Is Used for Certain G3516C Engines {1901, 1920}
C9.3 Tier 4 Final Engines Fuel Consumption Is Excessive
C9.3 Tier 4 Final Engines Fuel Pressure Is High
C13, C15, and C18 Tier 4 Final Engines Fuel Pressure Is Low
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