Cummins Fault Codes List: 5874 to 6498

Page 15 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 5874 to 6498

5874Engine Control Module Calibration Memory (ROM) Corruption - Root Cause Not Known
5879Electronic Throttle Control Actuator Driver Circuit - Voltage Above Normal or Shorted to High Source
588High voltage detected at the engine start alarm circuit when low voltage was expected by the electronic control module (ECM).
5881Electronic Throttle Control Actuator Driver Circuit - Voltage Below Normal or Shorted to Low Source
5882Electronic Throttle Control Actuator - Mechanical System Not Responding or Out of Adjustment
5887Aftertreament 1 SCR System Hydrocarbon - Data Valid But Above Normal Operating Range - Least Severe Level
5888Aftertreament 1 SCR System Hydrocarbon - Data Valid But Above Normal Operating Range - Moderately Severe Level
5889Aftertreament 1 SCR System Hydrocarbon - Data Valid But Above Normal Operating Range - Most Severe Level
589Less than (+) 6 VDC detected at the engine start alarm circuit when high voltage was expected by the ICON™ ECM.
5895Engine Misfire Cylinder #1 - Root Cause Not Known
5896Engine Misfire Cylinder #2 - Root Cause Not Known
5897Engine Misfire Cylinder #3 - Root Cause Not Known
5898Engine Misfire Cylinder #4 - Root Cause Not Known
5899Engine Misfire Cylinder #5 - Root Cause Not Known
5911Engine Misfire Cylinder #6 - Root Cause Not Known
5914Engine Misfire for Multiple Cylinders - Root Cause Not Known
5935Aftertreatment 1 Diesel Exhaust Fluid Pressure - Mechanical System Not Responding or Out of Adjustment
5936Aftertreatment 1 Diesel Exhaust Fluid Pressure - Data Valid But Above Normal Operating Range - Least Severe Level
5938Aftertreatment 1 Diesel Particulate Filter Conditions Not Met for Active Regeneration - Special Instructions
5939Machine Constrained Operation - Abnormal Update Rate
5941Machine Constrained Operation - Received Network Data in Error
5943Engine Turbocharger 1 Speed - Mechanical System Not Responding or Out of Adjustment
595Turbocharger Speed High (Calculated). Turbocharger speed calculation indicates turbocharger speed is above the engine protection warning limit.
595 BTurbocharger Number 1 Speed High - Warning Level
595 CITurbocharger Number 1 Speed High - Data Valid but Above Normal Operational Range - Moderately Severe Level
595 CLTurbocharger Number 1 Speed High - Data Valid but Above Normal Operational Range - Moderately Severe Level
595 (ISB)Turbocharger Number 1 speed high - warning level. High turbocharger speed has been detected.
595 (ISC)Turbocharger Number 1 Speed High - Data Valid but Above Normal Operational Range - Moderately Severe Level. High turbocharger speed has been detected.
596Electrical Charging System Voltage High - Data Valid But Above Normal Operating Range - Moderately Severe Level
597Electrical Charging System Voltage Low - Data Valid But Below Normal Operating Range - Moderately Severe Level
598Electrical Charging System Voltage Low - Data Valid But Below Normal Operating Range - Most Severe Level
5989Intake Manifold 1 Pressure - Data Not Rational - Drifted High
599Auxiliary Commanded Dual Output Shutdown - Special Instructions. The engine protection limit has been exceeded for the dual outputs calibrated limits.
5991Intake Manifold 1 Pressure - Data Not Rational - Drifted Low
6Exhaust Gas Temperature Sensor Number 1 Circuit - Voltage Above Normal, or Shorted to High Source
611Engine Shut Down Hot - Condition Exists
6155Engine Control Module - Root Cause Not Known
6182Aftertreatment Diesel Exhaust Fluid Dosing Control Unit Input Lines - Condition Exists
6245NOx Limits Exceeded Due to Insufficient Reagent Quality - Condition Exists. The diesel exhaust fluid quality is not sufficient enough to provide adequate NOx...
6246Aftertreatment 1 Outlet NOx Sensor Self-Diagnosis Trigger - Root Cause Not Known
6255Engine Protection Torque Derate - Data Valid But Above Normal Operating Range - Least Severe Level. Critical fault codes related to engine operation are active.
6256Battery 1 Voltage - Data Valid But Above Normal Operating Range - Least Severe Level. ECM supply voltage is above the maximum system voltage level.
6257Battery 1 Voltage - Data Valid But Above Normal Operating Range - Least Severe Level. ECM supply voltage is above the maximum system voltage level.
6258Electric Lift Pump for Engine Fuel Supply - Voltage Above Normal or Shorted to High Source
6259Electric Lift Pump for Engine Fuel Supply Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the fuel lift pump circuit.
6261Starter Relay Driver Circuit - Voltage Above Normal or Shorted to High Source. Open circuit or high voltage detected at starter lockout circuit.
6262Starter Relay Driver Circuit - Voltage Below Normal or Shorted to Low Source. Low voltage detected at starter lockout circuit.
6263Fan Control Circuit - Voltage Above Normal or Shorted to High Source. Open circuit or high voltage detected at the fan control circuit.
6264Fan Control Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the fan control circuit when commanded ON.
6265Aftertreatment 1 Diesel Particulate Filter System - Mechanical System Not Responding or Out of Adjustment
6266Aftertreatment 1 SCR Intermediate Gas Temperature- Special Instructions
6267Aftertreatment 1 SCR Intake Temperature- Special Instructions
6268Aftertreatment 1 SCR Outlet Temperature Sensor- Bad Intelligent Device or Component
629Turbocharger 1 Compressor Inlet Pressure - Data Valid But Below Normal Operating Range - Moderately Severe Level
6315Hybrid System OBD Related DTC Status- Root Cause Not Known. Unexpected data link communications between the ECM and the Hybrid system controller have occurred.
6336Crankcase Breather Filter Heater Circuit - Voltage Above Normal or Shorted to High Source
6337Crankcase Breather Filter Heater Circuit - Voltage Below Normal or Shorted to Low Source
6338SAE J1939 Multiplexing Configuration Error - Out of Calibration
6339Fuel Level 1- Abnormal Update Rate
6341Fuel Level 1- Out of Calibration
6342Fuel Level 2- Abnormal Update Rate
6343Fuel Level 2- Out of Calibration
6412Propulsion System Active - Root Cause Not Known. Unexpected data link communications between the ECM and the propulsion system have occurred.
6416Aftertreatment Regeneration Inhibited Due to Inhibit Switch - Condition Exists
6417SAE J1939 Multiplexing Remote Accelerator Pedal or Lever Position Sensor System- Received Network Data in Error
6418Engine Brake Actuator Driver 1 Circuit - Voltage Above Normal or Shorted to High Source
6419Engine Brake Actuator Driver 1 Circuit - Voltage Below Normal or Shorted to Low Source
6421Engine Brake Actuator Driver Output 2 Circuit - Voltage Above Normal or Shorted to High Source
6422Engine Brake Actuator Driver Output 2 Circuit - Voltage Below Normal or Shorted to Low Source
6432VGT Actuator Controller - Out of Calibration. The VGT actuator has been installed incorrectly.
6456Engine Fan Clutch 2 Control Circuit - Voltage Above Normal or Shorted to High Source
6457Engine Fan Clutch 2 Control Circuit - Voltage Below Normal or Shorted to Low Source
6458Aftertreatment 1 Intake NOx Sensor - Data Not Rational - Drifted High
6459Aftertreatment 1 Intake NOx Sensor - Data Not Rational - Drifted Low
6461Aftertreatment 1 Intake NOx - Data Erratic, Intermittent, or Incorrect
6462Aftertreatment 1 Outlet NOx Sensor - Data Not Rational - Drifted High
6463Aftertreatment 1 Outlet NOx Sensor - Data Not Rational - Drifted Low
6464Aftertreatment 1 Outlet NOx - Data Erratic, Intermittent, or Incorrect
6467Fan Speed - Data Valid But Above Normal Operating Range - Least Severe Level
6468Fan Speed - Data Valid But Below Normal Operating Range - Least Severe Level
6469Fan Speed - Data Erratic, Intermittent, or Incorrect
6471Engine Fan Blade Pitch Position Sensor Circuit - Voltage Above Normal or Shorted to High Source
6472Engine Fan Blade Pitch Position Sensor Circuit - Voltage Below Normal or Shorted to Low Source
6473Engine Fan Blade Pitch - Data Erratic, Intermittent, or Incorrect
6475Aftertreatment 1 Diesel Exhaust Fluid Tank Heater - Mechanical System Not Responding or Out of Adjustment
6476Aftertreatment 1 Diesel Exhaust Fluid Tank Heater - Data Valid But Below Normal Operating Range - Moderately Severe Level
6477Aftertreatment Diesel Exhaust Fluid Line Heater Relay Circuit - Voltage Above Normal or Shorted to High Source
6478Aftertreatment Diesel Exhaust Fluid Line Heater Relay Circuit - Voltage Below Normal or Shorted to Low Source
6479Aftertreatment 1 Diesel Exhaust Fluid Tank Heater Circuit - Voltage Above Normal or Shorted to High Source
6481Aftertreatment 1 Diesel Exhaust Fluid Tank Heater Circuit - Voltage Below Normal or Shorted to Low Source
6482Aftertreatment 1 Diesel Exhaust Fluid Line Heater 1 Circuit - Current Below Normal or Open Circuit
6483Aftertreatment 1 Diesel Exhaust Fluid Line Heater 2 Circuit - Current Below Normal or Open Circuit
6484Aftertreatment 1 Diesel Exhaust Fluid Line Heater 3 Circuit - Current Below Normal or Open Circuit
6485Aftertreatment 1 Diesel Exhaust Fluid Pump Drive Percentage - Data Erratic, Intermittent, or Incorrect
6486Aftertreatment 1 Diesel Exhaust Fluid Actual Dosing Quantity - Data Valid But Above Normal Operating Range - Moderately Severe Level
649Change Lubricating Oil and Filter. Maintenance Monitor feature indicates the engine is due for a lubricating oil and filter change.
6493Electronic Throttle Control Actuator Driver Circuit - Voltage Above Normal or Shorted to High Source
6494Electronic Throttle Control Actuator Driver Circuit - Voltage Below Normal or Shorted to Low Source
6497Engine Intake Throttle Actuator Position Sensor Circuit - Voltage Above Normal or Shorted to High Source
6498Engine Intake Throttle Actuator Position Sensor Circuit - Voltage Below Normal or Shorted to Low Source

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Safety-critical: confirm before use

Safety first: park on level ground, stop the engine, and secure the machine before any inspection. Thresholds, component locations, wire numbers, fuse locations, and reset procedures can vary by model, configuration, and serial number. Confirm them in the service documentation for your exact machine.