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Cummins Fault Codes List: 4241 to 466

Page 12 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 4241 to 466

  • 4241Aftertreatment Diesel Exhaust Fluid Quality - Received Network Data in Error
  • 4242Aftertreatment 1 Diesel Exhaust Fluid Temperature 2 - Data Erratic, Intermittent, or Incorrect
  • 4243Aftertreatment 1 Diesel Exhaust Fluid Temperature 2 - Abnormal Rate of Change
  • 4244Aftertreatment 1 Diesel Exhaust Fluid Dosing Temperature - Data Erratic, Intermittent, or Incorrect
  • 4245Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit Heater Temperature - Data Erratic, Intermittent, or Incorrect
  • 4249Aftertreatment Diesel Exhaust Fluid Dosing Temperature - Abnormal Rate of Change. The aftertreatment diesel exhaust fluid dosing unit temperature is stuck.
  • 425Engine Oil Temperature - Data Erratic, Intermittent, or Incorrect.
  • 4251Aftertreatment 1 Diesel Exhaust Fluid Dosing Unit Heater Temperature - Abnormal Rate of Change
  • 4252Engine Wait to Start Lamp - Condition Exists. The received signal does not match the commanded signal.
  • 4259Aftertreatment Diesel Particulate Filter Temperature Sensor Module - Root Cause Not Known
  • 426SAE J1939 data link - cannot transmit. Communication between the ECM and another device on the SAE J1939 data link has been lost.
  • 4261Aftertreatment Selective Catalytic Reduction Temperature Sensor Module - Root Cause Not Known
  • 4262High Pressure Common Rail Fuel Pressure Relief Valve Circuit - Voltage Above Normal or Shorted to High Source
  • 4263High Pressure Common Rail Fuel Pressure Relief Valve Circuit - Voltage Below Normal or Shorted to Low Source
  • 4265High Pressure Common Rail Fuel Pressure Relief Valve - Root Cause Not Known
  • 427J1939 Datalink - Abnormal Update Rate. Communication between the electronic control module (ECM) and another device on the SAE J1939 data link has been lost.
  • 4277Aftertreatment Diesel Exhaust Fluid Quality- Abnormal Update Rate of Change
  • 4279Aftertreatment 1 SCR Intermediate NH3 - Data not Rational - Drifted Low. An in range low failure has been detected.
  • 428Water-in-Fuel Indicator Sensor Circuit - Voltage Above Normal or Shorted to High Source. High voltage detected at the water-in-fuel circuit.
  • 4281Aftertreatment SCR Intermediate NH3 - Data erratic, intermittent or incorrect. The aftertreatment SCR intermediate NH3 sensor reading is stuck.
  • 4282Aftertreatment Diesel Oxidation Catalyst Conversion Efficiency - Condition Exists
  • 4284Desired Engine Fueling State - Abnormal Update Rate. A valid message from the transmission ECU has NOT been received.
  • 4289Accelerator Pedal or Lever Position Sensor 1 Circuit Frequency- Abnormal Frequency or Pulse Width or Period
  • 428 AUTOWater-in-Fuel Indicator Sensor Circuit - Voltage Above Normal or Shorted to High Source. High voltage detected at the water-in-fuel circuit.
  • 428 MARWater-in-Fuel Indicator Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 428 (Marine)Water-in-Fuel Indicator Sensor Circuit - Voltage Above Normal or Shorted to High Source. High voltage detected at the water-in-fuel circuit.
  • 429Water-in-Fuel Indicator Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low voltage detected at the water-in-fuel circuit.
  • 4293Engine Brake Active Lamp – Voltage Above Normal or Shorted to High Source
  • 4294Engine Brake Active Lamp – Voltage Below Normal or Shorted to Low Source
  • 429 AUTOWater-in-Fuel Indicator Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low voltage detected at the water-in-fuel circuit.
  • 429 MARWater-in-Fuel Indicator Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 429 (Marine)Water-in-Fuel Indicator Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low voltage detected at the water-in-fuel circuit.
  • 431Idle validation signals on pins 25 and 26 of the OEM harness indicate no voltage simultaneously detected on both pins or no voltage detected on either pin.
  • 431 (Integrated Sensor Switch)Accelerator Pedal or Lever Idle Validation Switch - Data Erratic, Intermittent, or Incorrect
  • 431 (ISS)Accelerator Pedal Idle Validation Circuit - data incorrect. Voltage detected simultaneously on both idle validation and off-idle validation switches.
  • 431 (IVS)Idle Validation Switch Circuit
  • 431 (NISS)Voltage detected simultaneously on both the idle validation off-idle and on-idle signal pins.
  • 431 (Nonintegrated Sensor Switch)Accelerator Pedal or Lever Idle Validation Circuit - Data Erratic, Intermittent, or Incorrect
  • 431 (SSS)Accelerator Pedal Idle Validation Circuit - data incorrect. Voltage detected simultaneously on both idle validation and off-idle validation switches.
  • 432Accelerator Pedal or Lever Idle Validation Switch Circuit - Out of Calibration
  • 432 (ISS)Accelerator Pedal Circuit
  • 432 (IVS)Accelerator Pedal Circuit
  • 432(SSS)Accelerator Pedal Circuit
  • 433Intake manifold pressure sensor circuit - data incorrect. An error in the intake manifold pressure sensor signal was detected by the ECM.
  • 434Automotive Application Power Supply Lost With Ignition On - Data Erratic, Intermittent or Incorrect
  • 435Oil Pressure Switch Sensor Circuit - Data Erratic, Intermittent or Incorrect. An error in the engine oil pressure switch signal was detected by the ECM.
  • 435 (ISB)Engine Oil Rifle Pressure - Data Erratic, Intermittent, or Incorrect. An error in the engine oil pressure switch signal was detected by the ECM.
  • 435 (ISC/ISL)Engine Oil Rifle Pressure - Data Erratic, Intermittent, or Incorrect. The engine oil pressure sensor is reading an erratic value at key ON.
  • 435 (Sensor)Engine Oil Rifle Pressure - Data Erratic, Intermittent, or Incorrect
  • 435 (Switch)Engine Oil Rifle Pressure - Data Erratic, Intermittent, or Incorrect
  • 436Intake Manifold 1 Temperature - Data Erratic, Intermittent, or Incorrect. The intake manifold temperature sensor is reading an erratic value at initial key ON.
  • 441Battery 1 Voltage - Data Valid but Below Normal Operational Range - Moderately Severe Level. ECM supply voltage is below the minimum system voltage level.
  • 441-ECM1Battery 1 Voltage - Data Valid but Below Normal Operational Range - Moderately Severe Level
  • 441-ECM2Battery 1 Voltage - Data Valid but Below Normal Operational Range - Moderately Severe Level
  • 442Battery 1 Voltage - Data Valid but Above Normal Operational Range - Moderately Severe Level. ECM supply voltage is above the maximum system voltage level.
  • 442-ECM1Battery 1 Voltage - Data Valid but Above Normal Operational Range - Moderately Severe Level
  • 442-ECM2Battery 1 Voltage High - Data Valid but Above Normal Operational Range - Moderately Severe Level
  • 443Accelerator Pedal Position Sensor Supply Voltage Circuit - shorted low. Low voltage detected at sensor supply circuit to the accelerator pedal position sensor.
  • 4431Aftertreatment Diesel Exhaust Fluid Controller - Out of Calibration
  • 4437J1939 Network #4 - Data Erratic, Intermittent, or Incorrect
  • 444Low voltage detected at remote accelerator position sensor supply pin 10 of the OEM harness.
  • 4449Aftertreatment 1 Particulate Sensor Regeneration Status- Data Valid But Above Normal Operating range- Moderately Severe Level
  • 4452Aftertreatment Outlet NOx Sensor Closed Loop Operation - Condition Exists. The maximum dosing adjustment has been reached.
  • 4453Aftertreatment Intermediate NH3 Sensor Closed Loop Operation - Condition Exists. The maximum dosing adjustment has been reached.
  • 445BEngine Oil Rifle Pressure - Data Erratic, Intermittent, or Incorrect
  • 445CLEngine Oil Rifle Pressure - Data Erratic, Intermittent, or Incorrect
  • 4484Engine Air Shutoff Circuit - Mechanical System Not Responding or Out of Adjustment.
  • 449(ISB/QSB Automotive and Industrial Application) Injector Metering Rail Number 1 Pressure - Data Valid But Above Normal Operating Range - Most Severe Level
  • 449 (Auto)Injector Metering Rail Number 1 Pressure - Data Valid But Above Normal Operating Range - Most Severe Level. The ECM has detected that fuel pressure in the rail...
  • 449 BInjector Metering Rail Number 1 Pressure - Data Valid But Above Normal Operating Range - Most Severe Level
  • 449 CLInjector Metering Rail Number 1 Pressure - Data Valid But Above Normal Operating Range - Most Severe Level
  • 449 (ISB/QSB3.3)Injector Metering Rail Number 1 Pressure - Data Valid But Above Normal Operating Range - Most Severe Level. The ECM has detected that fuel pressure in the fuel...
  • 449 (ISC - Auto)Injector Metering Rail Number 1 Pressure - Data Valid But Above Normal Operating Range - Most Severe Level. Fuel pressure signal indicates that fuel pressure...
  • 449 (ISC/ISL)Injector Metering Rail Number 1 Pressure - Data Valid But Above Normal Operating Range - Most Severe Level. The ECM has detected that fuel pressure in the fuel...
  • 451Injector Metering Rail Number 1 Pressure Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 4517Vehicle Identification Number - Out of Calibration. The vehicle identification number has not been programmed into the ECM.
  • 4518Aftertreatment 1 SCR Intermediate Gas Temperature Sensor Circuit- Voltage Above Normal or Shorted to High Source
  • 4519Aftertreatment 1 SCR Intermediate Gas Temperature Sensor Circuit- Voltage Below Normal or Shorted to Low Source
  • 452Injector Metering Rail Number 1 Pressure Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 4521Aftertreatment 1 SCR Intermediate Gas Temperature Sensor- Data Erratic, Intermittent, or Incorrect
  • 4524Aftertreatment 1 SCR Intermediate Gas Temperature- Data Valid But Above Normal Operating Range- Most Severe Level
  • 4525Aftertreatment 1 SCR Intermediate Gas Temperature- Data Valid But Above Normal Operating Range- Moderately Severe Level
  • 4526Brake Pedal Position - Data erratic, intermittent or incorrect. The values of the 2 brake switch signals do not match.
  • 4533Aftertreatment 1 Diesel Oxidation Catalyst Outlet Gas Temperature - Voltage Above Normal or Shorted to High Source
  • 4534Aftertreatment 1 Diesel Oxidation Catalyst Outlet Gas Temperature - Voltage Below Normal or Shorted to Low Source
  • 455Electronic Fuel Injection Control Valve Circuit - Voltage Above Normal or Shorted to High Source
  • 456Fuel Pressure Sensor Circuit. Fuel pressure sensor stuck in range while engine is operating or fuel pressure sensor reading erratic in range.
  • 4568Aftertreatment Fuel Shutoff valve- Data Valid But Above Normal Operating Range- Moderately Severe Level
  • 4572Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature - Abnormal Update Rate
  • 4584Aftertreatment Diesel Particulate Filter System - Special Instructions
  • 4585Aftertreatment 1 SCR Catalyst System - Special Instructions. The Incorrect SCR system has been Installed
  • 4587Aftertreatment 1 Diesel Exhaust Fluid Dosing Temperature - Data Valid But Above Normal Operating Range - Moderately Severe Level
  • 4612Engine Intake Manifold Pressure System Monitor - Condition Exists. The engine is unable to meet the air handling system commands.
  • 4615Engine Fuel Delivery Pressure - Data Valid But Above Normal Operating Range - Most Severe Level
  • 4616Intake Manifold 1 Pressure - Data Valid But Below Normal Operating Range - Least Severe Level
  • 4616 (HD)Intake Manifold 1 Pressure - Data Valid But Below Normal Operating Range - Least Severe Level
  • 4642Water-in-Fuel Indicator - Data Valid But Above Normal Operating Rage - Moderately Sever Level.
  • 465High voltage detected at the wastegate actuator number 1 circuit when no voltage was being supplied by the engine control module (ECM).
  • 4658Aftertreatment SCR Actual Dosing Reagent Quantity- Data Valid But Below Normal Operating Range- Moderately Severe
  • 466Engine Turbocharger Wastegate Actuator 1 Position Circuit - Voltage Below Normal or Shorted to Low Source
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