C7.1 Engines For Caterpillar Built Machines Caterpillar

The following table lists all the CDL diagnostic trouble codes for the engine. The table includes a description for each code and the recommended troubleshooting procedure that must be performed.

Table 1

CDL Code	Description	Refer to Procedure
1-2	Cylinder #1 Injector data incorrect	Injector Data Incorrect- Test
1-5	Cylinder #1 Injector current below normal	Injector Solenoid Circuit - Test
1-6	Cylinder #1 Injector current above normal	Injector Solenoid Circuit - Test
2-2	Cylinder #2 Injector data incorrect	Injector Data Incorrect- Test
2-5	Cylinder #2 Injector current below normal	Injector Solenoid Circuit - Test
2-6	Cylinder #2 Injector current above normal	Injector Solenoid Circuit - Test
3-2	Cylinder #3 Injector data incorrect	Injector Data Incorrect- Test
3-5	Cylinder #3 Injector current below normal	Injector Solenoid Circuit - Test
3-6	Cylinder #3 Injector current above normal	Injector Solenoid Circuit - Test
4-2	Cylinder #4 Injector data incorrect	Injector Data Incorrect- Test
4-5	Cylinder #4 Injector current below normal	Injector Solenoid Circuit - Test
4-6	Cylinder #4 Injector current above normal	Injector Solenoid Circuit - Test
5-2	Cylinder #5 Injector data incorrect	Injector Data Incorrect- Test
5-5	Cylinder #5 Injector current below normal	Injector Solenoid Circuit - Test
5-6	Cylinder #5 Injector current above normal	Injector Solenoid Circuit - Test
6-2	Cylinder #6 Injector data incorrect	Injector Data Incorrect- Test
6-5	Cylinder #6 Injector current below normal	Injector Solenoid Circuit - Test
6-6	Cylinder #6 Injector current above normal	Injector Solenoid Circuit - Test
18-5	Fuel Control Valve current below normal	Engine Pressure Sensor Open or Short Circuit - Test- Test
18-6	Fuel Control Valve current above normal	Engine Pressure Sensor Open or Short Circuit - Test- Test
41-3	8 Volt DC Supply voltage above normal	Engine Speed/Timing Sensor Circuit - Test
41-4	8 Volt DC Supply voltage below normal	Engine Speed/Timing Sensor Circuit - Test
91-3	Throttle Position Sensor voltage above normal	Digital Throttle Position Sensor Circuit - Test
91-4	Throttle Position Sensor voltage below normal	Digital Throttle Position Sensor Circuit - Test
91-8	Throttle Position Sensor abnormal frequency, pulse width, or period	Digital Throttle Position Sensor Circuit - Test
100-3	Engine Oil Pressure Sensor voltage above normal	Engine Pressure Sensor Open or Short Circuit - Test
100-4	Engine Oil Pressure Sensor voltage below normal	Engine Pressure Sensor Open or Short Circuit - Test
100-21	Engine Oil Pressure Sensor data drifted low	5 Volt Sensor Supply Circuit - Test
110-3	Engine Coolant Temperature Sensor voltage above normal	Engine Temperature Sensor Open or Short Circuit - Test (Passive Sensors)
110-4	Engine Coolant Temperature Sensor voltage below normal	Engine Temperature Sensor Open or Short Circuit - Test (Passive Sensors)
168-2	Electrical System Voltage erratic, intermittent, or incorrect	Ignition Keyswitch Circuit and Battery Supply Circuit - Test
168-3	Electrical System Voltage voltage above normal	Ignition Keyswitch Circuit and Battery Supply Circuit - Test
168-4	Electrical System Voltage voltage Below normal	Ignition Keyswitch Circuit and Battery Supply Circuit - Test
172-3	Intake Manifold Air Temperature Sensor voltage above normal	Engine Temperature Sensor Open or Short Circuit - Test (Passive Sensors)
172-4	Intake Manifold Air Temperature Sensor voltage below normal	Engine Temperature Sensor Open or Short Circuit - Test (Passive Sensors)
174-3	Fuel Temperature Sensor voltage above normal	Engine Temperature Sensor Open or Short Circuit - Test (Passive Sensors)
174-4	Fuel Temperature Sensor voltage below normal	Engine Temperature Sensor Open or Short Circuit - Test (Passive Sensors)
190-8	Engine Speed Sensor abnormal frequency, pulse width, or period	Engine Speed/Timing Sensor Circuit - Test
253-2	Personality Module erratic, intermittent, or incorrect	ECM Memory - Test
261-11	Engine Timing Offset fault	Engine Speed/Timing Sensor Circuit - Test
262-3	5 Volt Sensor DC Power Supply voltage above normal	5 Volt Sensor Supply Circuit - Test
262-4	5 Volt Sensor DC Power Supply voltage below normal	5 Volt Sensor Supply Circuit - Test
267-3	Remote Shutdown Input voltage above normal	Engine Shutdown Switch Circuit - Test
267-4	Remote Shutdown Input voltage below normal	Engine Shutdown Switch Circuit - Test
268-2	Programmed Parameter Fault erratic, intermittent, or incorrect	Flash Programming
274-3	Atmospheric Pressure Sensor voltage above normal	Engine Pressure Sensor Open or Short Circuit - Test
274-4	Atmospheric Pressure Sensor voltage below normal	Engine Pressure Sensor Open or Short Circuit - Test
274-21	Atmospheric Pressure Sensor data drifted low	5 Volt Sensor Supply Circuit - Test
291-5	Engine Cooling Fan Solenoid current below normal	Cooling Fan Control - Test
291-6	Engine Cooling Fan Solenoid current above normal	Cooling Fan Control - Test
296-9	Transmission Control abnormal update rate	CAN Data Link Circuit - Test
296-14	Transmission Control special instruction	Data Link Configuration Status - Check
342-8	Secondary Engine Speed Sensor abnormal frequency, pulse width, or period	Engine Speed/Timing Sensor Circuit - Test
526-5	Turbo Wastegate Drive current below normal	Solenoid Valve - Test
526-6	Turbo Wastegate Drive current above normal	Solenoid Valve - Test
549-2	Throttle Lock Enable Switch erratic, intermittent, or incorrect	Throttle Lock - Test
549-3	Throttle Lock Enable Switch voltage above normal	Throttle Lock - Test
549-4	Throttle Lock Enable Switch voltage below normal	Throttle Lock - Test
562-9	Caterpillar Monitor System abnormal update rate	CAN Data Link Circuit - Test
562-14	Caterpillar Monitor System special instruction	Data Link Configuration Status - Check
596-9	Implement Control abnormal update rate	CAN Data Link Circuit - Test
596-14	Implement Control special instruction	Data Link Configuration Status - Check
1551-13	Engine Demand Fan System out of calibration	Cooling Fan - Calibrate
1639-2	Machine Security System Module erratic, intermittent, or incorrect	Data Link Circuit - Test
1639-9	Machine Security System Module abnormal update rate	Data Link Circuit - Test
1785-3	Intake Manifold Pressure Sensor voltage above normal	Engine Pressure Sensor Open or Short Circuit - Test
1785-4	Intake Manifold Pressure Sensor voltage below normal	Engine Pressure Sensor Open or Short Circuit - Test
1785-13	Intake Manifold Pressure Sensor calibration required	Sensor Calibration Required - Test
1785-21	Intake Manifold Pressure Sensor data drifted low	5 Volt Sensor Supply Circuit - Test
1797-3	Fuel Rail Pressure Sensor voltage above normal	Engine Pressure Sensor Open or Short Circuit - Test
1797-4	Fuel Rail Pressure Sensor voltage below normal	Engine Pressure Sensor Open or Short Circuit - Test
2131-3	5 Volt Sensor DC Power Supply #2 voltage above normal	5 Volt Sensor Supply Circuit - Test
2131-4	5 Volt Sensor DC Power Supply #2 voltage below normal	5 Volt Sensor Supply Circuit - Test
2417-5	Ether Injection Control Solenoid current below normal	Ether Starting Aid - Test
2417-6	Ether Injection Control Solenoid current above normal	Ether Starting Aid - Test
2452-3	DPF #1 Intake Temperature Sensor voltage above normal	Engine Temperature Sensor Open or Short Circuit - Test (Active Sensors)
2452-4	DPF #1 Intake Temperature Sensor voltage below normal	Engine Temperature Sensor Open or Short Circuit - Test (Active Sensors)
2460-3	ARD Fuel Pressure #1 Sensor voltage above normal	Engine Pressure Sensor Open or Short Circuit - Test
2460-4	ARD Fuel Pressure #1 Sensor voltage below normal	Engine Pressure Sensor Open or Short Circuit - Test
2461-5	ARD Fuel Pressure #1 Control current below normal	Solenoid Valve - Test
2461-6	ARD Fuel Pressure #1 Control current above normal	Solenoid Valve - Test
2465-5	Aftertreatment #1 Ignition Transformer Primary current below normal	ARD Ignition - Test
2465-6	Aftertreatment #1 Ignition Transformer Primary current above normal	ARD Ignition - Test
2489-5	ARD Air Pressure Control Actuator current below normal	Motorized Valve - Test
2489-6	ARD Air Pressure Control Actuator current above normal	Motorized Valve - Test
2489-7	ARD Air Pressure Control Actuator not responding properly	Motorized Valve - Test
2490-3	ARD Air Pressure Control Actuator Position Sensor voltage above normal	Valve Position Sensor - Test
2490-4	ARD Air Pressure Control Actuator Position Sensor voltage below normal	Valve Position Sensor - Test
2526-3	Air Inlet Temperature Sensor voltage above normal	Engine Temperature Sensor Open or Short Circuit - Test (Passive Sensors)
2526-4	Air Inlet Temperature Sensor voltage below normal	Engine Temperature Sensor Open or Short Circuit - Test (Passive Sensors)
2738-3	Turbocharger #1 Compressor Inlet Pressure Sensor voltage above normal	Engine Pressure Sensor Open or Short Circuit - Test- Test
2738-4	Turbocharger #1 Compressor Inlet Pressure Sensor voltage below normal	Engine Pressure Sensor Open or Short Circuit - Test- Test
2770-3	Throttle Lock Resume/Decel Switch voltage above normal	Throttle Lock - Test
2770-4	Throttle Lock Resume/Decel Switch voltage below normal	Throttle Lock - Test
2771-3	Throttle Lock Set/Accel Switch voltage above normal	Throttle Lock - Test
2771-4	Throttle Lock Set/Accel Switch voltage below normal	Throttle Lock - Test
3180-5	Aftertreatment #1 Ignition Transformer Secondary current below normal	ARD Ignition - Test
3180-6	Aftertreatment #1 Ignition Transformer Secondary current above normal	ARD Ignition - Test
3182-5	Aftertreatment #1 Fuel Injector #1 Heater current below normal	ARD Nozzle Heater - Test
3182-6	Aftertreatment #1 Fuel Injector #1 Heater current above normal	ARD Nozzle Heater - Test
3183-2	DPF Regeneration Force Switch : Erratic, Intermittent, or Incorrect	Diesel Particulate Filter Regeneration Switch - Test
3184-2	DPF Regeneration Inhibit Switch : Erratic, Intermittent, or Incorrect	Diesel Particulate Filter Regeneration Switch - Test
3372-3	Engine Charge Air Cooler #1 Outlet Temperature Sensor voltage above normal	Engine Temperature Sensor Open or Short Circuit - Test (Passive Sensors)
3372-4	Engine Charge Air Cooler #1 Outlet Temperature Sensor voltage below normal	Engine Temperature Sensor Open or Short Circuit - Test (Passive Sensors)
3385-3	EGR Intake Pressure Sensor voltage above normal	Engine Pressure Sensor Open or Short Circuit - Test
3385-4	EGR Intake Pressure Sensor voltage below normal	Engine Pressure Sensor Open or Short Circuit - Test
3385-13	EGR Intake Pressure Sensor calibration required	Sensor Calibration Required - Test
3385-21	EGR Intake Pressure Sensor data drifted low	5 Volt Sensor Supply Circuit - Test
3386-3	EGR Temperature Sensor voltage above normal	Engine Temperature Sensor Open or Short Circuit - Test (Passive Sensors)
3386-4	EGR Temperature Sensor voltage below normal	Engine Temperature Sensor Open or Short Circuit - Test (Passive Sensors)
3387-3	EGR Differential Pressure Sensor voltage above normal	Engine Pressure Sensor Open or Short Circuit - Test
3387-4	EGR Differential Pressure Sensor voltage below normal	Engine Pressure Sensor Open or Short Circuit - Test
3387-13	EGR Differential Pressure Sensor calibration required	Sensor Calibration Required - Test
3397-3	DPF #1 Soot Loading Sensor voltage above normal	Soot Sensor - Test
3397-4	DPF #1 Soot Loading Sensor voltage below normal	Soot Sensor - Test
3397-9	DPF #1 Soot Loading Sensor abnormal update rate	Soot Sensor - Test
3397-12	DPF #1 Soot Loading Sensor failure	Soot Sensor - Test
3397-13	DPF #1 Soot Loading Sensor calibration required	Soot Sensor - Test
3397-21	DPF #1 Soot Loading Sensor data drifted low	Soot Sensor - Test
3405-5	Engine Exhaust Gas Recirculation Valve Control current below normal	Motorized Valve - Test
3405-6	Engine Exhaust Gas Recirculation Valve Control current above normal	Motorized Valve - Test
3407-3	Engine Exhaust Gas Recirculation Valve Position Sensor voltage above normal	Valve Position Sensor - Test
3407-4	Engine Exhaust Gas Recirculation Valve Position Sensor voltage below normal	Valve Position Sensor - Test
3427-5	Aftertreatment Fuel Pump Relay current below normal	ARD Fuel Supply - Test
3427-6	Aftertreatment Fuel Pump Relay current above normal	ARD Fuel Supply - Test
3464-3	DPF #1 Intake Pressure Sensor voltage above normal	Engine Pressure Sensor Open or Short Circuit - Test
3464-4	DPF #1 Intake Pressure Sensor voltage below normal	Engine Pressure Sensor Open or Short Circuit - Test
3464-13	DPF #1 Intake Pressure Sensor calibration required	Sensor Calibration Required - Test
3464-21	DPF #1 Intake Pressure Sensor data drifted low	5 Volt Sensor Supply Circuit - Test
3468-2	Aftertreatment #1 Identification Number Module erratic, intermittent, or incorrect	Diesel Particulate Filter Identification Signal - Test
3468-8	Aftertreatment #1 Identification Number Module abnormal frequency, pulse width, or period	Diesel Particulate Filter Identification Signal - Test
3468-14	Aftertreatment #1 Identification Number Module special instruction	Diesel Particulate Filter Identification Signal - Test
3485-3	Aftertreatment #1 Exhaust Gas Temperature #1 Sensor voltage above normal	Engine Temperature Sensor Open or Short Circuit - Test (Active Sensors)
3485-4	Aftertreatment #1 Exhaust Gas Temperature #1 Sensor voltage below normal	Engine Temperature Sensor Open or Short Circuit - Test (Active Sensors)
3493-3	Aftertreatment #1 Secondary Air Pressure Sensor voltage above normal	Engine Pressure Sensor Open or Short Circuit - Test
3493-4	Aftertreatment #1 Secondary Air Pressure Sensor voltage below normal	Engine Pressure Sensor Open or Short Circuit - Test
3493-13	Aftertreatment #1 Secondary Air Pressure Sensor out of calibration	Sensor Calibration Required - Test
3493-21	Aftertreatment #1 Secondary Air Pressure Sensor data drifted low	5 Volt Sensor Supply Circuit - Test
3514-5	Engine Throttle Actuator Control Command current below normal	Motorized Valve - Test
3514-6	Engine Throttle Actuator Control Command current above normal	Motorized Valve - Test
3515-3	Engine Throttle Valve Position Sensor voltage above normal	Valve Position Sensor - Test
3515-4	Engine Throttle Valve Position Sensor voltage below normal	Valve Position Sensor - Test
3547-3	Water in Fuel System Switch voltage above normal	Water in Fuel Sensor - Test
3666-5	Engine Fuel Supply Lift Pump Relay current below normal	Fuel Pump Relay Circuit - Test
3666-6	Engine Fuel Supply Lift Pump Relay current above normal	Fuel Pump Relay Circuit - Test
Event Codes
E232-1	High Fuel/Water Separator Water Level - Warning	Fuel Contains Water
E232-2	High Fuel/Water Separator Water Level - Derate	Fuel Contains Water
E360-1	Low Engine Oil Pressure - Warning	Oil Pressure Is Low
E360-2	Low Engine Oil Pressure - Derate	Oil Pressure Is Low
E360-3	Low Engine Oil Pressure - Shutdown	Oil Pressure Is Low
E361-1	High Engine Coolant Temperature - Warning	Coolant Temperature Is High
E361-2	High Engine Coolant Temperature - Derate	Coolant Temperature Is High
E361-3	High Engine Coolant Temperature - Shutdown	Coolant Temperature Is High
E362-1	Engine Overspeed - Warning	Engine Overspeeds
E362-3	Engine Overspeed - Shutdown	Engine Overspeeds
E363-1	High Fuel Supply Temperature - Warning	Fuel Temperature Is High
E363-2	High Fuel Supply Temperature - Derate	Fuel Temperature Is High
E396-2	High Fuel Rail Pressure - Warning	Fuel Rail Pressure Problem
E398-2	Low Fuel Rail Pressure - Warning	Fuel Rail Pressure Problem
E441-1	Idle Elevated to Increase Battery Voltage	Battery Problem
E499-3	Fuel Rail #1 Pressure Leak - Shutdown	Fuel Rail Pressure Problem
E539-1	High Intake Manifold Air Temperature - Warning	Intake Manifold Air Temperature Is High
E539-2	High Intake Manifold Air Temperature - Derate	Intake Manifold Air Temperature Is High
E539-3	High Intake Manifold Air Temperature - Shutdown	Intake Manifold Air Temperature Is High
E583-1	High Air Inlet #1 Differential Pressure - Warning	Inlet Air Is Restricted
E583-2	High Air Inlet #1 Differential Pressure - Derate	Inlet Air Is Restricted
E593-2	Aftertreatment Insufficient Temperature to Complete Regeneration - Derate	Diesel Particulate Filter Collects Excessive Soot or ARD Temperature Is Low
E678-3	Ground Level Shutdown - Shutdown	This code indicates that the ground level shutdown switch has been operated. The code does not indicate a fault.
E991-3	DPF Active Regeneration Inhibited Due to Permanent System Lockout - Shutdown	Diesel Particulate Filter Collects Excessive Soot
E992-3	DPF Active Regeneration Inhibited Due to Temporary System Lockout - Shutdown	Diesel Particulate Filter Collects Excessive Soot
E993-2	DPF Active Regeneration Inhibited Due to Inhibit Switch - Derate	Diesel Particulate Filter Collects Excessive Soot or ARD Is Disabled
E995-2	High DPF #1 Soot Loading - Derate	Diesel Particulate Filter Collects Excessive Soot
E995-3	High DPF #1 Soot Loading - Shutdown	Diesel Particulate Filter Collects Excessive Soot
E997-1	High DPF #1 Ash Loading - Warning	Diesel Particulate Filter Has High Ash Load
E997-2	High DPF #1 Ash Loading - Derate	Diesel Particulate Filter Has High Ash Load
E1008-1	High DPF #1 Intake Temperature - Warning	Diesel Particulate Filter Temperature Is High
E1008-2	High DPF #1 Intake Temperature - Derate	Diesel Particulate Filter Temperature Is High
E1014-2	Low DPF #1 Intake Temperature - Derate	Diesel Particulate Filter Temperature Is Low
E1025-2	Aftertreatment #1 Loss of Ignition - Derate	Diesel Particulate Filter Collects Excessive Soot or ARD Failed to Ignite
E1026-1	Aftertreatment #1 Loss of Combustion - Warning	ARD Loss of Combustion
E1026-2	Aftertreatment #1 Loss of Combustion - Derate	Diesel Particulate Filter Collects Excessive Soot or ARD Loss of Combustion
E1040-2	ARD Manually Disabled - Derate	This code indicates that the ARD Disable switch has been operated. The code does not indicate a fault.
E1044-2	High Intake Manifold Pressure - Derate	Intake Manifold Air Pressure Is High
E1045-2	Low Intake Manifold Pressure - Derate	Intake Manifold Air Pressure Is Low
E1050-1	High Aftertreatment #1 Fuel Pressure #1 - Warning	ARD Pilot Fuel Pressure Is High
E1050-2	High Aftertreatment #1 Fuel Pressure #1 - Derate	ARD Pilot Fuel Pressure Is High
E1052-1	Low Aftertreatment #1 Fuel Pressure #1 - Warning	ARD Pilot Fuel Pressure Is Low
E1052-2	Low Aftertreatment #1 Fuel Pressure #1 - Derate	ARD Pilot Fuel Pressure Is Low
E1070-1	Aftertreatment Fuel Injector #1 not responding - Warning	ARD Nozzle - Test
E1092-1	High Engine Exhaust Gas Recirculation Temperature - Warning	NRS Exhaust Gas Temperature Is High
E1092-2	High Engine Exhaust Gas Recirculation Temperature - Derate	NRS Exhaust Gas Temperature Is High
E1121-2	Engine Exhaust Gas Recirculation Valve Control Not Responding to Command - Derate	Motorized Valve - Test
E1154-1	Low DPF #1 Intake Pressure - Warning	Diesel Particulate Filter Has Low Inlet Pressure
E1154-2	Low DPF #1 Intake Pressure - derate	Diesel Particulate Filter Has Low Inlet Pressure
E1156-1	High DPF #1 Intake Pressure - Warning	Diesel Particulate Filter Has High Inlet Pressure
E1170-1	Low Aftertreatment #1 Secondary Air Pressure - Warning	ARD Combustion Air Pressure Is Low
E1171-1	Engine Idle Shutdown Occurred - Warning	This code indicates the engine idle shutdown timer has shut down the engine. The code does not indicate a fault.
E1172-3	Engine Idle Shutdown Pending - Shutdown	This code indicates the engine idle shutdown timer is about to shut down the engine. The code does not indicate a fault.
E1190-3	Low Aftertreatment Cooling Fan Speed - Shutdown	Aftertreatment Cooling Fan - Test
E1239-1	DPF #1 Conditions Not Met for Active Regeneration	Diesel Particulate Filter Collects Excessive Soot or ARD Is Disabled
E1262-2	Engine Throttle Actuator Not Responding to Command - Derate	Motorized Valve - Test
E1264-2	High Pressure Common Rail Fuel Pressure Relief Valve Active - Derate	Fuel Rail Pressure Problem
E1300-1	Aftertreatment Regeneration Cannot Start Due to Low Engine Temperature - Warning	ARD Is Disabled
E1300-2	Aftertreatment Regeneration Cannot Start Due to Low Engine Temperature - Derate	ARD Is Disabled
E1301-1	Aftertreatment Regeneration Cannot Start Due to System Fault - Warning	ARD Is Disabled
E1302-1	Aftertreatment Regeneration Cannot Start Due to Conditions Not Met - Warning	Diesel Particulate Filter Collects Excessive Soot or ARD Is Disabled
E1305-1	Initial Assembly Aftertreatment #1 Regeneration Required - Warning	Diesel Particulate Filter Requires Initial Regeneration
E1319-2	Engine Exhaust Gas Recirculation Mass Flow Rate Not Responding - Derate	NRS Mass Flow Rate Problem