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Cummins Fault Codes List & Code Lookup

Look up 1,847 Cummins fault codes and error codes, in plain English. 2 of them have a full guide covering what the code means, what triggers it, the most common causes, and the first things to check before you call the dealer.

Cummins fault code guides

Full Cummins fault code list

A generic J1939 reader pulls 1,813 of these; the other 35 need Cummins tooling to read in full. Every listed code is below, in code order, 100 to a page.

Codes on file

1,848

Readable as J1939 SPN/FMI

1,813

Cummins-specific

35

  • 1Exhaust Gas Pressure Sensor Number 1 Circuit - Voltage Above Normal, or Shorted to High Source
  • 10Engine mount issue for Cummins 85 HP engine.
  • 10-3Check generator slip rings and brushes for faults.
  • 11Engine fault detected in Cummins 85 HP.
  • 111Engine Control Module - critical internal failure. Error internal to the ECM related to memory hardware failures or internal ECM voltage supply circuits.
  • 1117Automotive Application Power Lost Without Ignition Off - Data Erratic, Intermittent, or Incorrect
  • 1117 AUTOAutomotive Application Power Lost Without Ignition Off - Data Erratic, Intermittent, or Incorrect
  • 1117 MARPower Lost without Ignition Off - Data Erratic, Intermittent, or Incorrect
  • 1117 (Marine)Power Lost without Ignition Off - Data Erratic, Intermittent, or Incorrect. Supply voltage to the ECM fell below +6.2-VDC momentarily, or the ECM was not...
  • 1119Engine Coolant Temperature - Data Valid But Above Normal Operating Range - Moderately Severe Level
  • 112Engine Timing Actuator Driver Circuit - Mechanical System Not Responding or Out of Adjustment
  • 113Engine Timing Actuator Driver Circuit - Voltage Above Normal or Shorted to High Source
  • 1139Injector Solenoid Driver Cylinder 1 - Mechanical System Not Responding Properly or Out of Adjustment. Unintended fueling detected in cylinder number 1.
  • 114Engine Timing Actuator Driver Circuit - Voltage Below Normal or Shorted to Low Source
  • 1141Injector Solenoid Driver Cylinder 2 - Mechanical System Not Responding Properly or Out of Adjustment. Unintended fueling detected in cylinder number 2.
  • 1142Injector Solenoid Driver Cylinder 3 - Mechanical System Not Responding Properly or Out of Adjustment. Unintended fueling detected in cylinder number 3.
  • 1143Injector Solenoid Driver Cylinder 4 - Mechanical System Not Responding Properly or Out of Adjustment. Unintended fueling detected in cylinder number 4.
  • 1144Injector Solenoid Driver Cylinder 5 - Mechanical System Not Responding Properly or Out of Adjustment. Unintended fueling detected in cylinder Number 5.
  • 1145Injector Solenoid Driver Cylinder 6 - Mechanical System Not Responding Properly or Out of Adjustment. Unintended fueling detected in cylinder Number 6.
  • 115Camshaft Engine Position Sensor Circuit. No engine speed signal detected from the camshaft engine position sensor.
  • 115VP30Engine Speed Sensor (ESS) Circuit
  • 115VP44Engine Speed Sensor (ESS) Circuit
  • 116Injector Timing Rail 1 Fuel Pressure Sensor Circuit Voltage Above Normal or Shorted to High Source
  • 117Injector Timing Rail 1 Fuel Pressure Sensor Circuit Voltage Below Normal or Shorted to Low Source
  • 12Engine fault detected in Cummins 74 HP Tier 4I.
  • 121Engine Magnetic Crankshaft Speed/Position Lost One of Two Signals - Abnormal Rate of Change
  • 122Intake Manifold Pressure Sensor Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at the intake manifold pressure circuit.
  • 1228EGR Valve Position - Data erratic, intermittent, or incorrect. Intermittent EGR position information is being received by the electronic control module (ECM).
  • 1229VGT Position Sensor - Data Erratic, Intermittent, or Incorrect
  • 123Intake Manifold Pressure Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the intake manifold pressure circuit.
  • 1239Accelerator Pedal or Lever Position Sensor 2 Circuit - Voltage Above Normal or Shorted to High Source.
  • 124Intake manifold pressure signal indicates intake manifold pressure has exceeded the maximum limit for the given engine rating
  • 1241Accelerator Pedal or Lever Position Sensor 2 Circuit - Voltage Below Normal or Shorted to Low Source.
  • 1242Accelerator Pedal or Lever Position Sensor Number 1 and Number 2 - Data Erratic, Intermittent, or Incorrect
  • 125Intake Manifold 1 Pressure - Data Valid But Below Normal Operating Range - Moderately Severe Level
  • 128Boost Pressure Sensor Circuit
  • 129Boost Pressure Sensor Circuit
  • 131Accelerator Pedal or Lever Position Sensor Circuit - Shorted High. High voltage detected at accelerator pedal or lever position circuit.
  • 131 (ISS)Accelerator Position Sensor Circuit
  • 131 (IVS)Accelerator Position Sensor Circuit
  • 131 (SSS)Accelerator Position sensor Circuit
  • 132Accelerator Pedal or Lever Position Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source.
  • 132 (ISS)Accelerator Position Sensor Circuit
  • 132 (IVS)Accelerator Position Sensor Circuit
  • 132 (SSS)Accelerator Position sensor Circuit
  • 133Remote Accelerator Pedal or Lever Position Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source.
  • 134Remote Accelerator Pedal or Lever Position Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source.
  • 135Engine Oil Rifle Pressure 1 Sensor Circuit - Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the engine oil pressure circuit.
  • 1357Engine Oil Level Remote Reservoir - Data Valid but Below Normal Operational Range - Moderately Severe Level
  • 1358Accelerator Pedal or Lever Position Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source
  • 1359Accelerator Pedal or Lever Position Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source
  • 135 AUTOOil Pressure Sensor Circuit - Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the engine oil pressure circuit.
  • 135 MAROil Pressure Sensor Circuit - Voltage Above Normal, or Shorted to High Source
  • 135 (Marine)Oil Pressure Sensor Circuit - Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the engine oil pressure circuit.
  • 135 (Sensor)Engine Oil Rifle Pressure 1 Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 135 (Switch)Engine Oil Rifle Pressure 1 Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 136Prefilter Oil Pressure Sensor Circuit
  • 1361Remote Accelerator Pedal or Lever Position Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source
  • 1363Intake Manifold 1 Pressure - Data Valid but Below Normal Operational Range - Least Severe Level
  • 1369Auxiliary Temperature Sensor Input 1 Circuit - Voltage Above Normal, or Shorted to High Source
  • 137Prefilter Oil Pressure Sensor Circuit
  • 1371Auxiliary Pressure Sensor Input 1 Circuit - Voltage Above Normal, or Shorted to High Source
  • 1372Auxiliary Pressure Sensor Input 1 Circuit - Voltage Below Normal, or Shorted to Low Source
  • 1373Start Enable Device 1 Circuit (Ether Injection) - Root Cause Not Known
  • 1376Engine Camshaft Speed/Position Sensor - Data Erratic, Intermittent, or Incorrect
  • 1381Auxiliary Temperature Sensor Input 1 - Special Instructions
  • 1383Intake Manifold 1 Pressure Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 1384Intake Manifold 1 Pressure Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 1385Intake Manifold 2 Pressure Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 1386Intake Manifold 2 Pressure Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 1387SAE J1939 Engine Commanded Shutdown - Condition Exists
  • 141Engine Oil Rifle Pressure 1 Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the engine oil pressure circuit.
  • 1411Generator Output Frequency Adjust Potentiometer Circuit - Voltage Above Normal or Shorted to High Source
  • 1412Droop Adjust Potentiometer Circuit - Voltage Above Normal or Shorted to High Source
  • 1418Gain Adjust Potentiometer Circuit - Voltage Above Normal or Shorted to High Source
  • 141 (Amr)Oil Pressure Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 141 AUTOOil Pressure Sensor Circuit - Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the engine oil pressure circuit
  • 141 MAROil Pressure Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 141 (Marine)Oil Pressure Sensor Circuit - Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the engine oil pressure circuit.
  • 141 (Sensor)Engine Oil Rifle Pressure 1 Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 141-SNHigh voltage detected at oil pressure sensor signal pin 33 of the engine harness.
  • 141-SWLow voltage detected on pin 47 of the engine harness
  • 141 (Switch)Engine Oil Rifle Pressure 1 Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 1427Overspeed Shutdown Relay Driver Diagnostic Has Detected an Error - Condition Exists
  • 1428Low Oil Pressure (LOP) Shutdown Relay Driver Diagnostic Has Detected an Error - Condition Exists
  • 1429High Engine Temperature (HET) Shutdown Relay Driver Diagnostic Has Detected an Error - Condition Exists
  • 143Engine Oil Pressure Low - Warning. Engine oil pressure signal indicates engine oil pressure is below the engine protection warning limit.
  • 1431Pre-Low Oil Pressure Warning Relay Driver Diagnostic Has Detected an Error - Condition Exists
  • 1432Pre-High Engine Temperature Warning Relay Driver Diagnostic Has Detected an Error - Condition Exists
  • 143 (Auto)Engine Oil Rifle Pressure - Data Valid but Below Normal Operational Range - Moderately Severe Level. Engine oil pressure signal indicates engine oil pressure...
  • 143 BEngine Oil Rifle Pressure - Data Valid but Below Normal Operational Range - Moderately Severe Level
  • 143 BMEngine Oil Rifle Pressure - Data Valid but Below Normal Operational Range - Moderately Severe Level
  • 143 (Marine)Engine Oil Rifle Pressure - Data Valid but Below Normal Operational Range - Moderately Severe Level. Engine oil pressure signal indicates engine oil pressure...
  • 143-SNOil pressure signal indicates oil pressure below the low engine protection limit
  • 143-SWOil pressure signal indicates oil pressure below the low engine protection limit.
  • 144(QSB Marine Application) Engine Coolant Temperature 1 Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 144 (Auto)Engine Coolant Temperature 1 Sensor Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage or open circuit detected at engine coolant...
  • 144 BEngine Coolant Temperature 1 Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 144 BMEngine Coolant Temperature 1 Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 144 (Marine)Engine Coolant Temperature 1 Sensor Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage or open circuit detected at engine coolant...

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