C13, C15, and C18 Tier 4 Interim Engines Diagnostic Trouble Codes Caterpillar


Diagnostic Trouble Codes
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Table 1 lists the diagnostic trouble codes that apply to the engines that are covered in this manual. Use the Cat® Electronic Technician (ET) in order to determine the codes that are active or logged. Then refer to the appropriate troubleshooting procedure for more information.

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.

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.

Table 1
List of Diagnostic Trouble Codes 
J1939 Code and Description  CDL Code and Description  Troubleshooting Procedure  Flash Codes 
29-2
Accelerator Pedal Position 2 : Erratic, Intermittent, or Incorrect 
774-2
Secondary Throttle Position Sensor:Erratic, Intermittent, or Incorrect 
Troubleshooting, "Speed Control - Test"  N/A 
29-3
Accelerator Pedal Position 2 : Voltage Above Normal 
774-3
Secondary Throttle Position Sensor:Voltage Above Normal 
Troubleshooting, "Speed Control - Test"  N/A 
29-4
Accelerator Pedal Position 2 : Voltage Below Normal 
774-4
Secondary Throttle Position Sensor:Voltage Below Normal 
Troubleshooting, "Speed Control - Test"  N/A 
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"  N/A 
91-2
Accelerator Pedal Position 1 : Erratic, Intermittent, or Incorrect 
91-2
Throttle Position Sensor : Erratic, Intermittent, or Incorrect 
Troubleshooting, "Speed Control - Test"  N/A 
91-3
Accelerator Pedal Position 1 : Voltage Above Normal 
91-3
Throttle Position Sensor : Voltage Above Normal 
Troubleshooting, "Speed Control - Test"  N/A 
91-4
Accelerator Pedal Position 1 : Voltage Below Normal 
91-4
Throttle Position Sensor : Voltage Below Normal 
Troubleshooting, "Speed Control - Test"  N/A 
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"  N/A 
100-3
Engine Oil Pressure : Voltage Above Normal 
100-3
Engine Oil Pressure Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test"  152 
100-4
Engine Oil Pressure : Voltage Below Normal 
100-4
Engine Oil Pressure Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test"  152 
100-13
Engine Oil Pressure : Calibration Required 
100-13
Engine Oil Pressure Sensor : Calibration Required 
Troubleshooting, "Sensor Calibration Required - Test"  197 
101-3
Engine Crankcase Pressure : Voltage Above Normal 
101-3
Crankcase Air Pressure Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test"  N/A 
101-4
Engine Crankcase Pressure : Voltage Below Normal 
101-4
Crankcase Air Pressure Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test"  N/A 
101-13
Engine Crankcase Pressure : Calibration Required 
101-13
Crankcase Air Pressure Sensor : Calibration Required 
Troubleshooting, "Sensor Calibration Required - Test"  N/A 
108-3
Barometric Pressure : Voltage Above Normal 
274-3
Atmospheric Pressure Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test"  152 
108-4
Barometric Pressure : Voltage Below Normal 
274-4
Atmospheric Pressure Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test"  152 
108-13
Barometric Pressure : Calibration Required 
274-13
Atmospheric Pressure Sensor : Calibration Required 
Troubleshooting, "Sensor Calibration Required - Test"  197 
108-21
Barometric Pressure : Calibration Required 
274-21
Atmospheric Pressure Sensor : Calibration Required 
Troubleshooting, "Sensor Supply - Test"  197 
110-3
Engine Coolant Temperature : Voltage Above Normal 
110-3
Engine Coolant Temperature Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test"  133 
110-4
Engine Coolant Temperature : Voltage Below Normal 
110-4
Engine Coolant Temperature Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test"  133 
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"  133 
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"  133 
158-2
Keyswitch Battery Potential : Erratic, Intermittent, or Incorrect 
1834-2
Ignition Key Switch loss of signal 
Troubleshooting, "Electrical Power Supply - Test"  439 
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"  422 
168-3
Battery Potential / Power Input 1 : Voltage Above Normal 
168-3
Electrical System Voltage : Voltage Above Normal 
Troubleshooting, "Electrical Power Supply - Test"  422 
168-4
Battery Potential / Power Input 1 : Voltage Below Normal 
168-4
Electrical System Voltage : Voltage Below Normal 
Troubleshooting, "Electrical Power Supply - Test"  422 
172-3
Engine Air Inlet Temperature : Voltage Above Normal 
2526-3
Air Inlet Temperature Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test"  133 
172-4
Engine Air Inlet Temperature : Voltage Below Normal 
2526-4
Air Inlet Temperature Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test"  133 
174-3
Engine Fuel Temperature 1 : Voltage Above Normal 
174-3
Fuel Temperature Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test"  165 
174-4
Engine Fuel Temperature 1 : Voltage Below Normal 
174-4
Fuel Temperature Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test"  165 
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"  141 
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"  N/A 
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"  N/A 
411-13
Engine Exhaust Gas Recirculation Differential Pressure : Calibration Required 
3387-13
EGR Differential Pressure Sensor : Calibration Required 
Troubleshooting, "Sensor Calibration Required - Test"  N/A 
412-3
Engine Exhaust Gas Recirculation Temperature : Voltage Above Normal 
3386-3
EGR Temperature Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test"  N/A 
412-4
Engine Exhaust Gas Recirculation Temperature : Voltage Below Normal 
3386-4
EGR Temperature Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test"  N/A 
442-3
Auxiliary Temperature #2 : Voltage Above Normal 
3683-3
Auxiliary Temperature Sensor #2 : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test"  N/A 
442-4
Auxiliary Temperature #2 : Voltage Below Normal 
3683-4
Auxiliary Temperature Sensor #2 : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test"  N/A 
626-5
Engine Start Enable Device 1 : Current Below Normal 
2417-5
Ether Injection Control Solenoid : Current Below Normal 
Troubleshooting, "Ether Starting Aid - Test"  N/A 
626-6
Engine Start Enable Device 1 : Current Above Normal 
2417-6
Ether Injection Control Solenoid : Current Above Normal 
Troubleshooting, "Ether Starting Aid - Test"  N/A 
630-2
Calibration Memory : Erratic, Intermittent, or Incorrect 
268-2
Programmed Parameter Fault : Erratic, Intermittent, or Incorrect 
Troubleshooting, "Configuration Parameters"  527 
631-2
Calibration Module : Erratic, Intermittent, or Incorrect 
253-2
Personality Module : Erratic, Intermittent, or Incorrect 
Troubleshooting, "ECM Software - Install"  N/A 
637-11
Engine Timing Sensor : Other Failure Mode 
261-11
Engine Timing Offset fault 
Troubleshooting, "Timing - Calibrate"  143 
637-13
Engine Timing Sensor : Calibration Required 
261-13
Engine Timing Calibration : Calibration Required 
Troubleshooting, "Timing - Calibrate"  143 
651-2
Engine Injector Cylinder #01 : Erratic, Intermittent, or Incorrect 
1-2
Cylinder #1 Injector : Erratic, Intermittent, or Incorrect 
Troubleshooting, "Injector Solenoid - Test"  111/139 
651-5
Engine Injector Cylinder #01 : Current Below Normal 
1-5
Cylinder #1 Injector : Current Below Normal 
Troubleshooting, "Injector Solenoid - Test"  111/139 
651-6
Engine Injector Cylinder #01 : Current Above Normal 
1-6
Cylinder #1 Injector : Current Above Normal 
Troubleshooting, "Injector Solenoid - Test"  111/139 
651-7
Engine Injector Cylinder #01 : Not Responding Properly 
1-7
Cylinder #1 Injector : Not Responding Properly 
Troubleshooting, "Injector Solenoid - Test"  111/139 
652-2
Engine Injector Cylinder #02 : Erratic, Intermittent, or Incorrect 
2-2
Cylinder #2 Injector : Erratic, Intermittent, or Incorrect 
Troubleshooting, "Injector Solenoid - Test"  112/139 
652-5
Engine Injector Cylinder #02 : Current Below Normal 
2-5
Cylinder #2 Injector : Current Below Normal 
Troubleshooting, "Injector Solenoid - Test"  112/139 
652-6
Engine Injector Cylinder #02 : Current Above Normal 
2-6
Cylinder #2 Injector : Current Above Normal 
Troubleshooting, "Injector Solenoid - Test"  112/139 
652-7
Engine Injector Cylinder #02 : Not Responding Properly 
2-7
Cylinder #2 Injector : Not Responding Properly 
Troubleshooting, "Injector Solenoid - Test"  112/139 
653-2
Engine Injector Cylinder #03 : Erratic, Intermittent, or Incorrect 
3-2
Cylinder #3 Injector : Erratic, Intermittent, or Incorrect 
Troubleshooting, "Injector Solenoid - Test"  113/139 
653-5
Engine Injector Cylinder #03 : Current Below Normal 
3-5
Cylinder #3 Injector : Current Below Normal 
Troubleshooting, "Injector Solenoid - Test"  113/139 
653-6
Engine Injector Cylinder #03 : Current Above Normal 
3-6
Cylinder #3 Injector : Current Above Normal 
Troubleshooting, "Injector Solenoid - Test"  113/139 
653-7
Engine Injector Cylinder #03 : Not Responding Properly 
3-7
Cylinder #3 Injector : Not Responding Properly 
Troubleshooting, "Injector Solenoid - Test"  113/139 
654-2
Engine Injector Cylinder #04 : Erratic, Intermittent, or Incorrect 
4-2
Cylinder #4 Injector : Erratic, Intermittent, or Incorrect 
Troubleshooting, "Injector Solenoid - Test"  114/139 
654-5
Engine Injector Cylinder #04 : Current Below Normal 
4-5
Cylinder #4 Injector : Current Below Normal 
Troubleshooting, "Injector Solenoid - Test"  114/139 
654-6
Engine Injector Cylinder #04 : Current Above Normal 
4-6
Cylinder #4 Injector : Current Above Normal 
Troubleshooting, "Injector Solenoid - Test"  114/139 
654-7
Engine Injector Cylinder #04 : Not Responding Properly 
4-7
Cylinder #4 Injector : Not Responding Properly 
Troubleshooting, "Injector Solenoid - Test"  114/139 
655-2
Engine Injector Cylinder #05 : Erratic, Intermittent, or Incorrect 
5-2
Cylinder #5 Injector : Erratic, Intermittent, or Incorrect 
Troubleshooting, "Injector Solenoid - Test"  115/139 
655-5
Engine Injector Cylinder #05 : Current Below Normal 
5-5
Cylinder #5 Injector : Current Below Normal 
Troubleshooting, "Injector Solenoid - Test"  115/139 
655-6
Engine Injector Cylinder #05 : Current Above Normal 
5-6
Cylinder #5 Injector : Current Above Normal 
Troubleshooting, "Injector Solenoid - Test"  115/139 
655-7
Engine Injector Cylinder #05 : Not Responding Properly 
5-7
Cylinder #5 Injector : Not Responding Properly 
Troubleshooting, "Injector Solenoid - Test"  115/139 
656-2
Engine Injector Cylinder #06 : Erratic, Intermittent, or Incorrect 
6-2
Cylinder #6 Injector : Erratic, Intermittent, or Incorrect 
Troubleshooting, "Injector Solenoid - Test"  116/139 
656-5
Engine Injector Cylinder #06 : Current Below Normal 
6-5
Cylinder #6 Injector : Current Below Normal 
Troubleshooting, "Injector Solenoid - Test"  116/139 
656-6
Engine Injector Cylinder #06 : Current Above Normal 
6-6
Cylinder #6 Injector : Current Above Normal 
Troubleshooting, "Injector Solenoid - Test"  116/139 
656-7
Engine Injector Cylinder #06 : Not Responding Properly 
6-7
Cylinder #6 Injector : Not Responding Properly 
Troubleshooting, "Injector Solenoid - Test"  116/139 
678-3
ECU 8 Volts DC Supply : Voltage Above Normal 
41-3
8 Volt DC Supply : Voltage Above Normal 
Troubleshooting, "Sensor Supply - Test"  N/A 
678-4
ECU 8 Volts DC Supply : Voltage Below Normal 
41-4
8 Volt DC Supply : Voltage Below Normal 
Troubleshooting, "Sensor Supply - Test"  N/A 
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"  142 
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"  162 
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"  162 
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"  163 
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"  163 
1385-3
Auxiliary Temperature #1 : Voltage Above Normal 
1836-3
Auxiliary Temperature Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test"  N/A 
1385-4
Auxiliary Temperature #1 : Voltage Below Normal 
1836-4
Auxiliary Temperature Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test"  N/A 
1387-3
Auxiliary Pressure #1 : Voltage Above Normal 
1835-3
Auxiliary Pressure Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test"  N/A 
1387-4
Auxiliary Pressure #1 : Voltage Below Normal 
1835-4
Auxiliary Pressure Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test"  N/A 
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"  N/A 
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"  N/A 
2791-5
Engine Exhaust Gas Recirculation (EGR) Valve Control : Current Below Normal 
3405-5
EGR Valve Control : Current Below Normal 
Troubleshooting, "Solenoid Valve - Test"  N/A 
2791-6
Engine Exhaust Gas Recirculation (EGR) Valve Control : Current Above Normal 
3405-6
EGR Valve Control : Current Above Normal 
Troubleshooting, "Solenoid Valve - Test"  N/A 
2813-5
Engine Air Shutoff Command Status : Current Below Normal 
3239-5
Air Shutoff Relay : Current Below Normal 
Troubleshooting, "Air Shutoff - Test"  N/A 
2813-6
Engine Air Shutoff Command Status : Current Above Normal 
3239-6
Air Shutoff Relay : Current Above Normal 
Troubleshooting, "Air Shutoff - Test"  N/A 
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"  186 
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"  186 
3242-3
Particulate Trap Intake Gas Temperature : Voltage Above Normal 
2452-3
DPF #1 Intake Temperature Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Passive) - Test"  N/A 
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"  N/A 
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"  N/A 
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"  N/A 
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"  N/A 
3251-13
Particulate Trap Differential Pressure : Out of Calibration 
2458-13
DPF #1 Differential Pressure Sensor : Out of Calibration 
Troubleshooting, "Sensor Calibration Required - Test"  N/A 
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"  N/A 
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"  N/A 
3358-13
Engine Exhaust Gas Recirculation Inlet Pressure : Calibration Required 
3385-13
EGR Intake Pressure Sensor : Calibration Required 
Troubleshooting, "Sensor Calibration Required - Test"  197 
3358-21
Engine Exhaust Gas Recirculation Inlet Pressure : Data Drifted Low 
3385-21
EGR Intake Pressure Sensor : Data Drifted Low 
Troubleshooting, "Sensor Supply - Test"  N/A 
3479-5
Aftertreatment #1 Fuel Pressure Control : Current Below Normal 
2461-5
ARD Fuel Pressure #1 Control : Current Below Normal 
Troubleshooting, "Solenoid Valve - Test"  N/A 
3479-6
Aftertreatment #1 Fuel Pressure Control : Current Above Normal 
2461-6
ARD Fuel Pressure #1 Control : Current Above Normal 
Troubleshooting, "Solenoid Valve - Test"  N/A 
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"  N/A 
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"  N/A 
3484-5
Aftertreatment #1 Ignition : Current Below Normal 
2465-5
Aftertreatment #1 Ignition Transformer Primary : Current Below Normal 
Troubleshooting, "ARD Ignition - Test"  N/A 
3484-6
Aftertreatment #1 Ignition : Current Above Normal 
2465-6
Aftertreatment #1 Ignition Transformer Primary : Current Above Normal 
Troubleshooting, "ARD Ignition - Test"  N/A 
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"  N/A 
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"  N/A 
3487-7
Aftertreatment #1 Air Pressure Control : Not Responding Properly 
2489-7
ARD Air Pressure Control Actuator : Not Responding Properly 
Troubleshooting, "ARD Combustion Air - Test"  N/A 
3487-8
Aftertreatment #1 Air Pressure Control : Abnormal Frequency, Pulse Width, or Period 
2489-8
ARD Air Pressure Control Actuator : Abnormal Frequency, Pulse Width, or Period 
Troubleshooting, "ARD Combustion Air - Test"  N/A 
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"  N/A 
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"  N/A 
3509-3
Sensor Supply Voltage 1 : Voltage Above Normal 
262-3
5 Volt Sensor DC Power Supply : Voltage Above Normal 
Troubleshooting, "Sensor Supply - Test"  516 
3509-4
Sensor Supply Voltage 1 : Voltage Below Normal 
262-4
5 Volt Sensor DC Power Supply : Voltage Below Normal 
Troubleshooting, "Sensor Supply - Test"  516 
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"  516 
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"  516 
3511-3
Sensor Supply Voltage 3 : Voltage Above Normal 
3482-3
Sensor Supply #3 : Voltage Above Normal 
Troubleshooting, "ARD Combustion Air - Test"  N/A 
3511-4
Sensor Supply Voltage 3 : Voltage Below Normal 
3482-4
Sensor Supply #3 : Voltage Below Normal 
Troubleshooting, "ARD Combustion Air - Test"  N/A 
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"  197 
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"  197 
3563-13
Engine Intake Manifold #1 Absolute Pressure : Calibration Required 
1785-13
Intake Manifold Pressure Sensor : Calibration Required 
Troubleshooting, "Sensor Calibration Required - Test"  197 
3563-21
Engine Intake Manifold #1 Absolute Pressure : Data Drifted Low 
1785-21
Intake Manifold Pressure Sensor : Data Drifted Low 
Troubleshooting, "Sensor Supply - Test"  N/A 
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"  N/A 
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"  N/A 
3609-13
DPF #1 Intake Pressure : Calibration Required 
3464-13
DPF #1 Intake Pressure Sensor : Calibration Required 
Troubleshooting, "Sensor Calibration Required - Test"  N/A 
3609-21
DPF #1 Intake Pressure : Data Drifted Low 
3464-21
DPF #1 Intake Pressure Sensor : Data Drifted Low 
Troubleshooting, "Sensor Supply - Test"  N/A 
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.   
3697-5
Particulate Trap Lamp Command : Current Below Normal 
1090-5  Troubleshooting, "Indicator Lamp - Test"  N/A 
3697-6
Particulate Trap Lamp Command : Current Above Normal 
1090-6  Troubleshooting, "Indicator Lamp - Test"  N/A 
3698-5
Exhaust System High Temperature Lamp Command : Current Below Normal 
1091-5  Troubleshooting, "Indicator Lamp - Test"  N/A 
3698-6
Exhaust System High Temperature Lamp Command : Current Above Normal 
1091-6  Troubleshooting, "Indicator Lamp - Test"  N/A 
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"  N/A 
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"  N/A 
3837-13
Aftertreatment 1 Secondary Air Pressure : Calibration Required 
3493-13
Aftertreatment #1 Secondary Air Pressure Sensor : Calibration Required 
Troubleshooting, "Sensor Calibration Required - Test"  N/A 
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"  N/A 
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"  N/A 
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"  N/A 
4212-5
Fan Drive Bypass Command Status : Current Below Normal 
291-5
Engine Cooling Fan Solenoid : Current Below Normal 
Troubleshooting, "Cooling Fan Control - Test"  N/A 
4212-6
Fan Drive Bypass Command Status : Current Above Normal 
291-6
Engine Cooling Fan Solenoid : Current Above Normal 
Troubleshooting, "Cooling Fan Control - Test"  N/A 
4265-5
Aftertreatment #1 Transformer Secondary Output : Current Below Normal 
3180-5
Aftertreatment #1 Ignition Transformer Secondary : Current Below Normal 
Troubleshooting, "ARD Ignition - Test"  N/A 
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"  N/A 
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"  N/A 
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"  N/A 
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"  N/A 
5423-5
Aftertreatment #1 Fuel Pump Relay Control : Current Below Normal 
3427-5
Aftertreatment Fuel Pump Relay : Current Below Normal 
Troubleshooting, "Solenoid Valve - Test"  N/A 
5423-6
Aftertreatment #1 Fuel Pump Relay Control : Current Above Normal 
3427-6
Aftertreatment Fuel Pump Relay : Current Above Normal 
Troubleshooting, "Solenoid Valve - Test"  N/A 
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"  N/A 
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"  N/A 
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"  N/A 
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"  N/A 
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"  N/A 
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"  N/A 
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"  N/A 
5576-14
Aftertreatment #1 Identification : Special Instruction 
3468-14
Aftertreatment #1 Identification Number Module : Special Instruction 
Troubleshooting, "Data Link Configuration Status - Test"  N/A 
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"  N/A 
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"  N/A 
5578-13
Engine Fuel Delivery Absolute Pressure : Calibration Required 
289-13
Fuel Pressure Sensor - Before Fuel Filter : Calibration Required 
Troubleshooting, "Sensor Calibration Required - Test"  N/A 
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"  N/A 
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"  N/A 
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"  N/A 
5580-13
Engine Filtered Fuel Delivery Absolute Pressure : Calibration Required 
460-13
Fuel Pressure Sensor - After Fuel Filter : Calibration Required 
Troubleshooting, "Sensor Calibration Required - Test"  N/A 
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"  N/A 
5591-3
Aftertreatment #1 DPF Air Control Module : Voltage Above Normal 
3472-3
ARD Air Pressure Control System : Voltage Above Normal 
Troubleshooting, "ARD Combustion Air - Test"  N/A 
5591-4
Aftertreatment #1 DPF Air Control Module : Voltage Below Normal 
3472-4
ARD Air Pressure Control System : Voltage Below Normal 
Troubleshooting, "ARD Combustion Air - Test"  N/A 
5591-5
Aftertreatment #1 DPF Air Control Module : Current Below Normal 
3471-5
ARD Air Pressure Control Module : Current Below Normal 
Troubleshooting, "ARD Combustion Air - Test"  N/A 
5591-6
Aftertreatment #1 DPF Air Control Module : Current Above Normal 
3471-6
ARD Air Pressure Control Module : Current Above Normal 
Troubleshooting, "ARD Combustion Air - Test"  N/A 
5591-9
Aftertreatment #1 DPF Air Control Module : Abnormal Update Rate 
3472-9
ARD Air Pressure Control System : Abnormal Update Rate 
Troubleshooting, "ARD Combustion Air - Test"  N/A 
5591-14
Aftertreatment #1 DPF Air Control Module : Special Instruction 
3472-14
ARD Air Pressure Control System : Special Instruction 
Troubleshooting, "Data Link Configuration Status - Test"  N/A 
N/A  246-9
Proprietary CAN Data Link : Abnormal Update Rate 
Troubleshooting, "Data Link - Test"   
N/A  246-14
Proprietary CAN Data Link : Special Instruction 
Troubleshooting, "Data Link Configuration Status - Test"   
N/A  247-9
SAE J1939 Data Link : Abnormal Update Rate 
Troubleshooting, "Data Link - Test"   
N/A  247-14
SAE J1939 Data Link : Special Instruction 
Troubleshooting, "Data Link Configuration Status - Test"   
N/A  267-3
Remote Shutdown Input : Voltage Above Normal 
Troubleshooting, "Shutdown (Ground Level) - Test"   
N/A  267-4
Remote Shutdown Input : Voltage Below Normal 
Troubleshooting, "Shutdown (Ground Level) - Test"   
N/A  296-9
Sensor Power Supply : Abnormal Update Rate 
Troubleshooting, "Data Link - Test"  N/A 
N/A  296-14
Sensor Power Supply : Special Instruction 
Troubleshooting, "Data Link Configuration Status - Test"  N/A 
N/A  444-5
Starter Motor Relay : Current Below Normal 
Troubleshooting, "Starter Relay Circuit - Test"  N/A 
N/A  444-6
Starter Motor Relay : Current Above Normal 
Troubleshooting, "Starter Relay Circuit - Test"  N/A 
N/A  485-5
Engine Fan Reversing Solenoid : Current Below Normal 
Troubleshooting, "Cooling Fan Reversing - Test"  N/A 
N/A  485-6
Engine Fan Reversing Solenoid : Current Above Normal 
Troubleshooting, "Cooling Fan Reversing - Test"  N/A 
N/A  544-8
Engine Cooling Fan Speed Sensor : Abnormal Frequency, Pulse Width, or Period 
Troubleshooting, "Cooling Fan Speed - Test"  N/A 
N/A  596-9
Implement Control : Abnormal Update Rate 
Troubleshooting, "Data Link - Test"  N/A 
N/A  596-14
Implement Control : Special Instruction 
Troubleshooting, "Data Link Configuration Status - Test"  N/A 
N/A  1076-5
Engine Cooling Fan Bypass Solenoid : Current Below Normal 
Troubleshooting, "Cooling Fan Control - Test"  N/A 
N/A  1076-6
Engine Cooling Fan Bypass Solenoid : Current Above Normal 
Troubleshooting, "Cooling Fan Control - Test"  N/A 
N/A  1273-9
Chassis Control Module : Abnormal Update Rate 
Troubleshooting, "Data Link - Test"  N/A 
N/A  1273-14
Chassis Control Module : Special Instruction 
Troubleshooting, "Data Link Configuration Status - Test"  N/A 
N/A  1551-13
Engine Demand Fan System : Out of Calibration 
Troubleshooting, "Cooling Fan - Calibrate"  N/A 
N/A  1603-9
Machine Control Module : Abnormal Update Rate 
Troubleshooting, "Data Link - Test"  N/A 
N/A  1603-14
Machine Control Module : Special Instruction 
Troubleshooting, "Data Link Configuration Status - Test"  N/A 
N/A  1639-2
Machine Security System Module : Erratic, Intermittent, or Incorrect 
Troubleshooting, "Data Link - Test"  N/A 
N/A  1639-9
Machine Security System Module : Abnormal Update Rate 
Troubleshooting, "Data Link - Test"  N/A 
N/A  1834-2
Ignition Key Switch loss of signal 
Troubleshooting, "Electrical Power Supply - Test"  N/A 
N/A  2738-3
Turbocharger #1 Compressor Inlet Pressure Sensor : Voltage Above Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test"  N/A 
N/A  2738-4
Turbocharger #1 Compressor Inlet Pressure Sensor : Voltage Below Normal 
Troubleshooting, "Sensor Signal (Analog, Active) - Test"  N/A 

Information System:

C9.3 Tier 4 Final Engines Fuel Filter Base
C9.3 Tier 4 Final Engines Air Inlet and Exhaust System
C9.3 Tier 4 Final Engines Fuel System
904H Compact Wheel Loader Maintenance Interval Schedule
C9.3 Engines for Caterpillar Built Machines Test ECM Mode
C9.3 Engines for Caterpillar Built Machines Electronic Service Tool Does Not Communicate
C13, C15, and C18 Engines for Caterpillar Built Machines Factory Passwords
D7E Track-Type Tractor Power Train Track - Connect - SystemOne Track
C13, C15, and C18 Tier 4 Interim Engines Component Location
C13 Engine for Caterpillar Built Machines Engine Control Module - Remove and Install
C13, C15, and C18 Tier 4 Interim Engines Exhaust Temperature Is High
C11, C13, C15, and C18 Industrial Engines Exhaust System Contains Oil
C13, C15, and C18 Tier 4 Interim Engines Event Codes
2009/05/25 Correction to the Operation and Maintenance Manual , "Engine Air Filter Primary Element - Clean/Replace" {1054}
C9.3 Engines for Caterpillar Built Machines Fuel Transfer Pump - Remove and Install
C11 and C13 Engines Cylinder Head Valves
D5R Track-Type Tractor Steering Is Harsh
2009/05/25 Correction to the Service Manual , "Ejector Body" {7258}
Procedure For Replacing The Harness Between The Chassis And The Hitch{1408}
C9.3 Engines for Caterpillar Built Machines Fuel Lines - Remove and Install
2009/08/17 A Hotline for the Fuel Systems for Hydraulic Electronic Unit Injectors (HEUI) Is Now Available. {1251, 1290}
AccuGrade GPS / Single UTS / Site and Laser Reference v11 for Excavators Excavator Arm Sensors - Calibrate - PSC System
3516B Engine for 994F and 994H Wheel Loaders Power Is Intermittently Low or Power Cutout Is Intermittent
2009/05/25 Correction to the Disassembly and Assembly , "Tailgate - Remove" {7250, 7271}