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CAT Engine Fault Codes List: 543-4 to E1123

Page 6 of 12 of the full CAT Engine fault code list (1,341 codes). Each entry is the code as the machine reports it and what the manufacturer data says it means.

CAT Engine codes 543-4 to E1123

  • 543-4Engine Oil Pressure Sensor - Before Oil Filer : Voltage Below Normal
  • 544-2Engine Cooling Fan Speed Sensor : Erratic, Intermittent, or Incorrect
  • 549-02Throttle Lock Mode Switch Data Erratic, Intermittent or Incorrect
  • 569-5Oil Injection Solenoid : Current Below Normal
  • 569-6Oil Injection Solenoid : Current Above Normal
  • 582-3Engine Air Filter 1 Differential Pressure : Voltage Above Normal
  • 582-4Engine Air Filter 1 Differential Pressure : Voltage Below Normal
  • 5856-14SAE J1939 Data Link #3 - Special Instruction
  • 588-14Monitor System Display special instruction
  • 588-9Monitoring System Display : Abnormal Update Rate
  • 590-9Unable to Communicate with Engine ECM
  • 596-12Wrong Response from Implement ECM
  • 596-14Implement Control : Special Instruction
  • 596-9Unable to Communicate with Implement ECM
  • 600-3Hydraulic Oil Temperature Sensor : Voltage Above Normal
  • 600-4Hydraulic Oil Temperature Sensor : Voltage Below Normal
  • 601-13Brake Air Pressure calibration required
  • 601-3Brake Air Pressure open/short to +batt
  • 601-4Brake Air Pressure short to ground
  • 61High Engine Coolant Temperature Shutdown
  • 628-2Program Memory : Erratic, Intermittent, or Incorrect
  • 63Fuel Filter Restriction Shutdown
  • 630-2Calibration Memory : Erratic, Intermittent, or Incorrect
  • 64High Inlet Air Temperature Warning
  • 650-1212 Harness Code Invalid
  • 717-2Remote Throttle Switch Incorrect Inputs
  • 7-2Cylinder #7 Injector : Erratic, Intermittent, or Incorrect
  • 73Cylinder 3 Or Cylinder 4 Fault
  • 74Cylinder 5 or Cylinder 6 Fault
  • 7-7Cylinder #8 Injector : Erratic, Intermittent, or Incorrect
  • 771-5Shutter Relay current below normal
  • 771-6Shutter Relay current above normal
  • 774Accelerator Pedal #2 Low Idle Switch : Erratic, Intermittent, or Incorrect
  • 788-2Loss of Engine Retarder Selector Switch Signal
  • 791-5Compression Brake Low/High Solenoid current low
  • 791-6Compression Brake Low/High Solenoid current high
  • 792-5Compression Brake Medium/High Solenoid current low
  • 792-6Compression Brake Medium/High Solenoid current high
  • 800-14VIMS Main Module : Special Instruction
  • 800-9VIMS Main Module : Abnormal Update Rate
  • 817-6Air Inlet Heater Relay grounded/current above norm
  • 8-2Cylinder #8 Injector : Erratic, Intermittent, or Incorrect
  • 827-3Left Exhaust Temperature Sensor : Voltage Above Normal
  • 827-4Left Exhaust Temperature Sensor : Voltage Below Normal
  • 827-8Left Exhaust Temperature Sensor : Abnormal Frequency, Pulse Width, or Period
  • 828-3Right Exhaust Temperature Sensor : Voltage Above Normal
  • 828-4Right Exhaust Temperature Sensor : Voltage Below Normal
  • 828-8Right Exhaust Temperature Sensor : Abnormal Frequency, Pulse Width, or Period
  • 829-3Rear Aftercooler Coolant Temperature Sensor : Voltage Above Normal
  • 829-4Rear Aftercooler Coolant Temperature Sensor : Voltage Below Normal
  • 830-3Front Brake Oil Temperature open/short to +batt
  • 830-4Front Brake Oil Temperature short to ground
  • 8-7Cylinder #8 Injector : Not Responding Properly
  • 91Accelerator Pedal #1 Low Idle Switch : Erratic, Intermittent, or Incorrect
  • 91-0Throttle Switch not Released
  • 91-13Throttle Position Calibration Required
  • 9-2Cylinder #9 Injector : Erratic, Intermittent, or Incorrect
  • 94-16Engine Fuel Delivery Pressure : High - moderate severity
  • 95-2Fuel Filter Differential Pressure Sensor : Erratic, Intermittent, or Incorrect
  • 95-3Fuel Filter Differential Pressure Sensor : Voltage Above Normal
  • 95-4Fuel Filter Differential Pressure Sensor : Voltage Below Normal
  • 9-7Cylinder #9 Injector : Not Responding Properly
  • 99-2Engine Oil Filter Differential Pressure Sensor : Erratic, Intermittent, or Incorrect
  • E004Engine Overspeed Shutdown
  • E005Fuel Filter Restriction Derate
  • E006Fuel Filter Restriction Shutdown
  • E009High Altitude Derate
  • E015High Engine Coolant Temperature Derate
  • E016High Engine Coolant Temperature Shutdown
  • E017High Engine Coolant Temperature Warning
  • E023High Hydraulic Oil Temperature Derate
  • E025High Inlservice tool Air Temperature Derate
  • E026High Inlet Air Temperature Shutdown
  • E027High Inlservice tool Air Temperature Warning
  • E035Loss of Coolant Flow Warning
  • E039Low Engine Oil Pressure Derate
  • E040Low Engine Oil Pressure Shutdown
  • E053Low Engine Oil Pressure Warning
  • E057Low Engine Coolant Level Derate
  • E058Low Engine Coolant Level Shutdown
  • E059Low Engine Coolant Level Warning
  • E073High Oil Filter Differential Pressure
  • E095Fuel Filter Restriction Warning
  • E096High Fuel Pressure
  • E098(1) Engine Pre -lube Override
  • E099Engine Oil Filter Restriction Warning
  • E1000High Left Intake Manifold Air Temperature
  • E101High Crankcase Pressure Warning
  • E1014Low DPF #1 Intake Temperature
  • E1036High Crankcase Pressure
  • E1044Engine Intake Manifold #1 Pressure : High - Moderate Severity (2)
  • E1045Engine Intake Manifold #1 Pressure : Low - Moderate Severity (2)
  • E1090High Engine Exhaust Gas Recirculation Intake Pressure
  • E1092High Engine Exhaust Gas Recirculation Temperature
  • E1093Low Engine Exhaust Gas Recirculation Differential Pressure
  • E1094High Engine Exhaust Gas Recirculation Differential Pressure
  • E1095Low Engine Exhaust Gas Recirculation Mass Flow Rate
  • E1096High Engine Exhaust Gas Recirculation Mass Flow Rate
  • E1106High Fuel Rail Pump Flow
  • E1123Engine Exhaust Manifold Bank #1 Flow Balance Valve Not Responding to Command
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