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Cummins Fault Codes List: 4677 to 529

Page 13 of 19 of the full Cummins fault code list (1,847 codes). Each entry is the code as the machine reports it and what the manufacturer data says it means.

Cummins codes 4677 to 529

  • 4677Aftertreatment 1 Diesel Exhaust Fluid Tank Level - Abnormal Update Rate
  • 4679Aftertreatment 1 Diesel Exhaust Fluid Tank Level Sensor Circuit - Current Below Normal or Open Circuit
  • 469The ICON™ cab thermostat has logged a fault (displayed on thermostat as E3) or cab thermostat signal to the electronic control module (ECM) is lost.
  • 4691Engine Injector Metering Rail 1 Cranking Pressure- Data Valid But Below Normal Operating Range- Moderately Severe Level
  • 471Engine Oil Level — Data Valid But Below Normal Operational Range — Least Severe Level. Low oil level has been detected by the oil level sensor.
  • 4713Engine Fuel Injection Quantity Error for Multiple Cylinders - Condition Exists. A malfunction of a single or multiple fuel injectors has been detected.
  • 472Either high or low voltage detected on the crankcase oil level sensor circuit by the electronic control module (ECM).
  • 4721Vehicle Identification Number - Condition Exists
  • 4722Vehicle Identification Number - Data Erratic, Intermittent, or Incorrect
  • 4724Auxiliary Input/Output 2 Circuit - Current Below Normal or Open Circuit
  • 4725Auxiliary Input/Output 2 Circuit - Current Above Normal or Grounded Circuit
  • 4726Engine Fuel Leakage - Data Valid But Above Normal Operating Range - Moderately Severe Level. Fuel rail pressure decay has been detected.
  • 4727Injector Metering rail 1 Pressure- Data Valid But Above Normal Operating Range- Least Severe Level
  • 4728Exhaust Gas Pressure- Data Valid But Below Normal Operating Range- Moderately Severe Level
  • 4729Intake Manifold 1 Pressure - Data Valid But Below Normal Operating Range - Most Severe Level
  • 4731Aftertreatment Diesel Exhaust Fluid Tank Temperature Sensor - Out of Calibration. The received datalink message was not valid.
  • 4732Aftertreatment Diesel Exhaust Fluid Tank Level Sensor - Out of Calibration. The received datalink message was not valid.
  • 4734Auxiliary Input/Output 1 - Special Instructions
  • 4737Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature - Root Cause Not Known.
  • 4739Aftertreatment 1 Diesel Exhaust Fluid Tank Level Sensor - Root Cause Not Known.
  • 474Either low voltage detected when (+) 12 VDC are commanded or voltage detected when no voltage is commanded.
  • 4741Aftertreatment Diesel Exhaust Fluid Quality Sensor Circuit - Current Below Normal or Open Circuit
  • 4742Aftertreatment Diesel Exhaust Fluid Quality Sensor Circuit - Current Above Normal or Grounded Circuit
  • 4743Aftertreatment 1 Diesel Exhaust Fluid Temperature 2 Sensor Circuit - Current Below Normal or Open Circuit
  • 4744Aftertreatment 1 Diesel Exhaust Fluid Temperature 2 Sensor Circuit - Current Above Normal or Grounded Circuit
  • 4745Aftertreatment 1 Diesel Exhaust Fluid Temperature 2 - Root Cause Not Known
  • 4747Aftertreatment Intake Oxygen - Data Not Rational - Drifted High. An in-range high failure has been detected.
  • 4748Aftertreatment Intake Oxygen - Data Not Rational - Drifted Low. An in-range low failure has been detected.
  • 4749Aftertreatment Outlet Oxygen - Data Not Rational - Drifted High. An in-range high failure has been detected.
  • 475Low voltage was detected on the electronic air compressor circuit when high voltage was expected.
  • 4751Aftertreatment Outlet Oxygen - Data Not Rational - Drifted Low. An in-range low failure has been detected.
  • 4752Aftertreatment 1 Diesel Exhaust Fluid Dosing Valve 1 Heater - Voltage Above Normal or Shorted to High Source
  • 4753Aftertreatment 1 Diesel Exhaust Fluid Dosing Valve 1 Heater - Voltage Below Normal or Shorted to Low Source
  • 476High voltage or an open circuit detected at the electronic air compressor governor actuator circuit.
  • 4768Aftertreatment 1 Diesel Exhaust Fluid Property - Root Cause Not Known. Unknown fluid inside DEF tank.
  • 4769Aftertreatment 1 Diesel Exhaust Fluid Tank Level Sensor - Abnormal Rate of Change. A valid diesel exhaust fluid tank level reading has NOT been received.
  • 477Battery 2 Voltage - Data Valid but Below Normal Operating Range - Moderately Severe Level.
  • 478Battery 2 Voltage - Data Valid but Above Normal Operating Range - Moderately Severe Level.
  • 4789Fan Speed - Data Valid But Above Normal Operating Range - Most Severe Level
  • 4791Fan Speed - Data Valid But Below Normal Operating Range - Most Severe Level
  • 482Fuel Pressure Low - Data Valid But Below Normal Operating Range - Moderately Severe Level. Low fuel supply pressure was detected at the fuel pressure sensor.
  • 483Injector Metering Rail 2 Pressure Sensor Circuit - Voltage above normal, or shorted to high source
  • 4839Engine Air Shutoff- Condition Exists
  • 484Injector Metering Rail 2 Pressure Sensor Circuit - Voltage below normal, or shorted to low source
  • 4841Engine Injector Metering Rail 1 Cold Start Pressure - Data Valid But Above Normal Operating Range - Moderately Severe Level
  • 4842Aftertreatment Diesel Exhaust Fluid Quality - Data Valid But Above Normal Operating Range - Least Severe Level
  • 485Unexpectedly high rail pressure was detected on the rear three cylinders.
  • 486Injector Metering Rail Number 2 Fueling Low - WarningAn unexpectedly low fuel delivery was detected on the rear three cylinders.
  • 4863Aftertreatment SCR Operator Inducement Active - Condition Exists
  • 4865-2 WireEngine Coolant Level 2 Sensor Circuit - Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the engine coolant level 2 circuit.
  • 4865 (2-Wire Sensor)Engine Coolant Level 2 Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 4865-3 WireEngine Coolant Level 2 Sensor Circuit - Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the engine coolant level 2 circuit.
  • 4865 (3-Wire Sensor)Engine Coolant Level 2 Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 4866-2 WireEngine Coolant Level 2 Sensor Circuit - Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the engine coolant level 2 circuit.
  • 4866 (2-Wire Sensor)Engine Coolant Level 2 Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 4866-3 WireEngine Coolant Level 2 Sensor Circuit - Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the engine coolant level 2 circuit.
  • 4866 (3-Wire Sensor)Engine Coolant Level 2 Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 4867High Pressure Common Rail Fuel Pressure Relief Valve - Condition Exists
  • 488Intake manifold air temperature signal indicates the intake manifold air temperature is approaching the engine protection limit.
  • 489Auxiliary speed frequency on input pin indicates the frequency is below a calibration-dependent threshold.
  • 491High voltage detected at the wastegate actuator number 2 circuit when no voltage was being supplied by the engine control module (ECM).
  • 492Turbocharger 2 Wastegate Control Circuit - Voltage below normal, or shorted to low source.
  • 493The electronic control module (ECM) detected a failure in the injection control valve identifier circuit.
  • 4947Aftertreatment 1 Diesel Exhaust Fluid Doser Heating Mode Request - Condition Exists
  • 4948Performance Bias Selection Switch Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at performance bias selection circuit.
  • 4949Performance Bias Selection Switch - Voltage Below Normal or Shorted to Low Source
  • 4951Maintain ECU Power Lamp Circuit - Voltage Above Normal or Shorted to High Source
  • 4952Maintain ECU Power Lamp Circuit - Voltage Below Normal or Shorted to Low Source
  • 4956Engine Variable Geometry Turbo (VGT) Software - Out of Calibration. VGT software does not match application.
  • 4957Variable Geometry Turbocharger Actuator Software - Condition Exists
  • 496Incorrect voltage detected on the electronic control module (ECM) voltage supply line to the camshaft engine position sensor.
  • 497Error detected in the multiple unit synchronization control switch input, pins 24 and 38 of the OEM harness.
  • 498Engine Oil Level Sensor Circuit - Voltage Above Normal or Shorted to High Source. The engine oil level sensor has detected an internal failure.
  • 499Engine Oil Level Sensor Circuit - Voltage Below Normal or Shorted to Low Source. The engine oil level sensor has detected an internal failure.
  • 5Exhaust Gas Temperature Sensor Number 1 Circuit - Voltage Below Normal, or Shorted to Low Source
  • 5115Aftertreatment 1 Diesel Exhaust Fluid Line Heater Relay - Condition Exists
  • 515High voltage detected at the auxiliary +5- VDC sensor supply voltage pin 49 of the engine harness.
  • 516Low voltage detected at the auxiliary +5- VDC sensor supply voltage pin 49 of the engine harness.
  • 517Fuel Pump Valve Feedback Error
  • 5177Variable Geometry Turbocharger Actuator Software - Abnormal Update Rate. The ECM lost communication or did not support message from the VGT actuator.
  • 5183Engine Fan Blade Pitch Position Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 5184Engine Fan Blade Pitch Position Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 5185Engine Fan Blade Pitch - Mechanical System Not Responding or Out of Adjustment
  • 5221Engine Air Shutoff Status - Data Erratic, Intermittent, or Incorrect
  • 523Auxiliary Intermediate (PTO) Speed Switch Validation - Data Erratic, Intermittent, or Incorrect
  • 524Error detected on the highspeed governor droop selection switch.
  • 5247Aftertreatment 1 SCR Intake Temperature - Data Valid But Above Normal Operating Range - Moderately Severe Level
  • 5248Tachograph Output Shaft Speed - Out of Calibration - The received datalink message was not valid.
  • 5259Engine Air Shutoff Status- Special Instructions
  • 527Less than (+) 17.0 VDC detected at the switched output A signal pin of the 31-pin OEM connector.
  • 5271Engine Exhaust Back Pressure Regulator Control Circuit - Voltage Above Normal or Shorted to High Source
  • 5272Engine Exhaust Back Pressure Regulator Control Circuit - Voltage Below Normal or Shorted to Low Source
  • 5273Engine Exhaust Back Pressure Regulator Control Circuit - Current Below Normal or Open Circuit
  • 5274Engine Exhaust Back Pressure Regulator Position - Data Erratic, Intermittent, or Incorrect
  • 5275Engine Exhaust Back Pressure Regulator Position Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 5276Engine Exhaust Back Pressure Regulator Position Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 5277Engine Exhaust Back Pressure Regulator - Out of Calibration
  • 5278Aftertreatment 1 Diesel Exhaust Fluid Dosing System Frozen - Condition Exists
  • 528Auxiliary Alternate Torque Validation Switch - Data Erratic, Intermittent, or Incorrect. An error has been detected in the alternate torque switch circuit.
  • 529Less than (+) 17 VDC detected at the switched output B signal pin at the electronic control module (ECM).
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