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Cummins Fault Codes List: 6787 to 8213

Page 17 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 6787 to 8213

  • 6787Aftertreatment 1 Diesel Particulate Filter Outlet Pressure Sensor - Data Not Rational - Drifted Low
  • 6788Aftertreatment 1 Diesel Particulate Filter Differential Pressure Sensor - Data Not Rational - Drifted High
  • 6789Aftertreatment 1 Diesel Particulate Filter Differential Pressure Sensor - Data Not Rational - Drifted Low
  • 6791Aftertreatment 1 SCR Outlet Temperature Sensor - Data Not Rational - Drifted High
  • 6792Aftertreatment 1 SCR Outlet Temperature Sensor - Data Not Rational - Drifted Low
  • 6793Aftertreatment 1 Particulate Sensor Module - Data Not Rational - Drifted High
  • 6794Aftertreatment 1 Particulate Sensor Module - Data Not Rational - Drifted Low
  • 6797Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature Sensor - Data Not Rational - Drifted High
  • 6798Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature Sensor - Data Not Rational - Drifted Low
  • 6799Aftertreatment 1 Diesel Exhaust Fluid Pressure Sensor - Data Not Rational - Drifted High
  • 6811Aftertreatment 1 Diesel Exhaust Fluid Pressure Sensor - Data Not Rational - Drifted Low
  • 6812Aftertreatment 1 Diesel Exhaust Fluid Temperature 2 Sensor - Data Not Rational - Drifted High
  • 6813Aftertreatment 1 Diesel Exhaust Fluid Temperature 2 Sensor - Data Not Rational - Drifted Low
  • 6814Aftertreatment 1 Outlet Oxygen Sensor - Data Not Rational - Drifted High
  • 6815Aftertreatment 1 Outlet Oxygen Sensor - Data Not Rational - Drifted Low
  • 686Turbocharger 1 Speed - Data Erratic, Intermittent, or Incorrect. An invalid turbocharger speed signal has been detected by the ECM.
  • 687(ISC/QSC/ISL/QSL Automotive, Industrial, or Marine Application) Turbocharger Number 1 Speed Low - Data Valid but Below Normal Operational Range - Moderately Severe Level
  • 6876Aftertreatment 1 SCR Outlet Temperature Sensor - Data Not Rational - Drifted High
  • 6879Aftertreatment 1 Diesel Particulate Filter Outlet Temperature Sensor - Data Not Rational - Drifted High
  • 687 B(ISB/QSB Automotive or Industrial Application) Turbocharger Speed Sensor - Below Normal Operating Range
  • 687 CITurbocharger Number 1 Speed Low - Data Valid but Below Normal Operational Range - Moderately Severe Level
  • 687 CL(ISC/QSC/ISL/QSL Automotive, Industrial, or Marine Application) Turbocharger Number 1 Speed Low - Data Valid but Below Normal Operational Range - Moderately Severe Level
  • 687 (ISB)Turbocharger number 1 speed low - warning level. Low turbocharger speed detected by the ECM.
  • 687 (ISC)Turbocharger Number 1 Speed Low - Data Valid but Below Normal Operational Range - Moderately Severe Level. Low turbocharger speed detected by the ECM.
  • 688Engine Oil Level — Data Valid But Above Normal Operational Range — Most Severe Level. High oil level has been detected by the oil level sensor.
  • 689Engine Crankshaft Speed/Position - Data Erratic, Intermittent, or Incorrect. The ECM has detected an error in crankshaft position sensor signal.
  • 689 (ISM)Engine Crankshaft Speed/Position - Data Erratic, Intermittent, or Incorrect. Loss of signal from primary camshaft engine position sensor.
  • 689 (ISX)Engine Crankshaft Speed/Position - Data Erratic, Intermittent, or Incorrect. The ECM has detected an error in the engine speed signal.
  • 691Turbocharger Number 1 Compressor Inlet Temperature Sensor Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at the turbocharger compressor inlet air temperature circuit.
  • 692Turbocharger Number 1 Compressor Inlet Temperature Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the turbocharger compressor inlet air temperature sensor circuit.
  • 6925Aftertreatment 1 SCR Intake NOx Sensor - Condition Exists
  • 6926Aftertreatment 1 SCR Intake NOx Sensor - Special Instructions
  • 6927Aftertreatment Intake Oxygen Sensor - Special Instructions
  • 693Turbocharger 1 Compressor Intake Temperature - Data Erratic, Intermittent, or Incorrect.
  • 694Left Bank Rear Turbocharger Compressor Inlet Temperature Sensor Circuit
  • 695Left Bank Rear Turbocharger Compressor Inlet Temperature Sensor Circuit
  • 697ECM Internal Temperature Sensor Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage or an open circuit detected at the internal ECM temperature sensor.
  • 698ECM Internal Temperature Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage or an open circuit detected at the internal ECM temperature sensor.
  • 699Engine ECU Temperature- Data Erratic, Intermittent, or Incorrect
  • 7155Engine Control Module Circuit - Voltage Below Normal or Shorted to Low Source
  • 721Exhaust Temperature Senor Circuit - Right Bank Cylinder No. 1
  • 722Exhaust Temperature Senor Circuit - Right Bank Cylinder No. 2
  • 7222Engine Brake Actuator Driver 3 Circuit - Voltage Above Normal or Shorted to High Source
  • 723Exhaust Temperature Senor Circuit - Right Bank Cylinder No. 3
  • 7232Engine Exhaust Gas Recirculation (EGR) System - Data Valid But Above Normal Operating Range - Most Severe Level
  • 7233Engine Intake Manifold Pressure - Data Valid But Below Normal Operating Range - Most Severe Level
  • 7234Engine Speed At Idle - Data Valid But Below Normal Operating Range - Least Severe Level
  • 724Exhaust Temperature Senor Circuit - Right Bank Cylinder No. 4
  • 725Exhaust Temperature Senor Circuit - Right Bank Cylinder No. 5
  • 726Exhaust Temperature Senor Circuit - Right Bank Cylinder No. 6
  • 727Exhaust Temperature Senor Circuit - Right Bank Cylinder No. 7
  • 7273Exhaust Gas Pressure - Data Valid But Below Normal Operating Range - Least Severe Level
  • 728Exhaust Temperature Senor Circuit - Right Bank Cylinder No. 8
  • 731Engine Speed/Position Camshaft and Crankshaft Misalignment - Mechanical System Not Responding Properly, or Out of Adjustment. Engine position signal from the engine speed sensor and camshaft position sensor do not match.
  • 7319Aftertreatment 1 Outlet NOx Sensor - Condition Exists
  • 731 (Auto)Engine Speed Sensor/Position Camshaft and Crankshaft Misalignment - Mechanical System Not Responding Properly or Out of Adjustment. Mechanical misalignment between the crankshaft and camshaft engine speed sensors.
  • 731 B(ISB/QSB Automotive and Industrial, ISC/QSC/ISL/QSL Automotive, Industrial, or Marine) Engine Speed Sensor/Position Camshaft and Crankshaft Misalignment - Mechanical System Not Responding Properly or Out of Adjustment
  • 731 BM(QSB Marine Application) Engine Speed Sensor/Position Camshaft and Crankshaft Misalignment - Mechanical System Not Responding Properly or Out of Adjustment
  • 731 (Marine)Engine Speed Sensor/Position Camshaft and Crankshaft Misalignment - Mechanical System Not Responding Properly or Out of Adjustment. Mechanical misalignment between the crankshaft and camshaft engine speed sensors.
  • 7397Engine Intake Manifold Pressure - Data Valid But Above Normal Operating Range - Most Severe Level
  • 741Turbocharger 1 Compressor Intake Pressure Circuit - Voltage Above Normal or Shorted to High Source
  • 742Turbocharger 1 Compressor Intake Pressure Circuit - Voltage Below Normal or Shorted to Low Source
  • 743Turbocharger 1 Compressor Intake Pressure - Data Erratic, Intermittent, or Incorrect
  • 7435Engine Turbocharger 1 Compressor Intake Pressure - Data Not Rational - Drifted Low
  • 7436Engine Turbocharger 1 Compressor Intake Pressure - Data Not Rational - Drifted High
  • 753Engine position signal from the camshaft and crankshaft engine position sensors do not match up.
  • 755Injector Metering Rail 1 Pressure- Mechanical System not responding or out of adjustment
  • 757Engine Control Module Data Lost - Condition Exits. Severe loss of data from the ECM.
  • 758Incorrect fueling was detected on the rear three cylinders.
  • 7582Exhaust Gas Pressure - Data Valid But Below Normal Operating Range - Least Severe Level
  • 7583Intake Manifold 1 Pressure - Data Valid But Above Normal Operating Range - Least Severe Level
  • 768Error detected in the output device driver (transmission shift modulation signal) signal pin 21 on the original equipment manufacturer's (OEM) harness
  • 769Brake Switch Circuit - Voltage above normal, or shorted to high source
  • 771Brake Switch Circuit - Voltage below normal, or shorted to low source
  • 778Engine Camshaft Speed / Position Sensor - Data Erratic, Intermittent, or Incorrect.  The ECM has detected a loss of signal from the camshaft position sensor.
  • 778 (ISM)Engine Camshaft Speed/Position Sensor - Data Erratic, Intermittent, or Incorrect. The ECM has detected an error in the camshaft position sensor signal.
  • 778 (ISX)Engine Camshaft Speed/Position Sensor - Data Erratic, Intermittent, or Incorrect. The ECM has detected an error in the camshaft position sensor signal.
  • 779OEM input signal indicates OEM value has exceeded the engine protection limit.
  • 784Loss of communication with adaptive cruise control. The ECM triggers this fault when the “heartbeat” signal from the data bus is not received.
  • 7861Turbocharger 1 Compressor Intake Temperature Sensor - Abnormal Rate of Change
  • 7863Ambient Air Temperature - Abnormal Rate of Change
  • 7864Exhaust Gas Pressure - Abnormal Rate of Change
  • 7866Barometric Pressure - Abnormal Rate of Change
  • 7894Aftertreatment 1 Diesel Particulate Filter Outlet Temperature - Abnormal Rate of Change
  • 7896Aftertreatment 1 Diesel Exhaust Fluid Tank Level - Condition Exists
  • 7935Engine Exhaust Gas Recirculation 1 Temperature - Abnormal Rate of Change
  • 8154Engine Exhaust Gas Recirculation 1 Temperature - Abnormal Rate of Change
  • 8155Connectivity Module - Bad Intelligent Device or Component
  • 8156Connectivity Module - Abnormal Update Rate
  • 8157Connectivity Module - Condition Exists
  • 8179Automated Driving System TSC1-P7 - Abnormal Update Rate
  • 8194Communications Service Subscriber Identification Module - Bad Intelligent Device or Component
  • 8195Datalog Memory Card - Bad Intelligent Device or Component
  • 8196Datalog Memory Card - Root Cause Not Known
  • 8197Connectivity Module RAM Memory - Bad Intelligent Device or Component
  • 8198Connectivity Module Cellular - Bad Intelligent Device or Component
  • 8199Connectivity Module USB - Bad Intelligent Device or Component
  • 8211Connectivity Module Cellular External Antenna - Current Below Normal or Open Circuit
  • 8212Connectivity Module Cellular External Antenna - Voltage Above Normal or Shorted to High Source
  • 8213Connectivity Module GPS External Antenna - Current Below Normal or Open Circuit
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