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Cummins Fault Codes List: 145 to 1679 (HW)

Page 2 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 145 to 1679 (HW)

  • 145(ISB/QSB Automotive and Industrial, ISC/QSC/ISL/QSL Automotive, Industrial, and Marine) Engine Coolant Temperature 1 Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 145 (Auto)Engine Coolant Temperature 1 Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at engine coolant temperature circuit.
  • 145 BAutomotive: Possible white smoke. Fan will stay ON if controlled by ECM. No engine protection for engine coolant temperature. Marine: calibration dependent.
  • 145 BMEngine Coolant Temperature 1 Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 145 (Marine)Engine Coolant Temperature 1 Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at engine coolant temperature circuit.
  • 146(ISB/QSB Automotive and Industrial, ISC/QSC/ISL/QSL Automotive, Industrial, and Marine) Engine Coolant Temperature - Data Valid but Above Normal Operational Range - Moderately Severe Level
  • 146 (Auto)Engine Coolant Temperature - Data Valid but Above Normal Operational Range - Moderately Severe Level. Engine coolant temperature signal indicates engine coolant temperature is above engine protection warning limit.
  • 146 BEngine Coolant Temperature - Data Valid but Above Normal Operational Range - Moderately Severe Level
  • 146 BMEngine Coolant Temperature - Data Valid but Above Normal Operational Range - Moderately Severe Level
  • 146 (Marine)Engine Coolant Temperature - Data Valid but Above Normal Operational Range - Moderately Severe Level. Engine coolant temperature signal indicates engine coolant temperature is above engine protection warning limit.
  • 147Accelerator Pedal or Lever Position 1 Sensor Circuit Frequency - Data Valid but Below Normal Operational Range - Most Severe Level. A frequency of less than 100 HZ has been detected at the frequency throttle input to the ECM.
  • 148Accelerator Pedal or Lever Position Sensor 1 - Data Valid but Above Normal Operational Range - Most Severe Level. A frequency of more than 1500 Hz has been detected at the frequency throttle input to the ECM.
  • 151Engine Coolant Temperature - Data Valid But Above Normal Operational Range - Most Severe Level. Engine coolant temperature signal indicates engine coolant temperature above engine protection critical limit.
  • 1514Accelerator Pedal or Lever Position Sensor 1 Circuit Frequency - Abnormal Frequency or Pulse Width or Period
  • 1515SAE J1939 Multiplexed Accelerator Pedal or Lever Sensor System - Received Network Data In Error
  • 1517At Least One Module Has A Most Severe Fault - Condition Exists
  • 1518At Least One Module Has A Moderately Severe Fault - Condition Exists
  • 1519At Least One Module Has a Least Severe Fault - Condition Exists
  • 151 (Auto)Engine Coolant Temperature - Data Valid but Above Normal Operational Range - Most Severe Level. Engine coolant temperature signal indicates engine coolant temperature above engine protection critical limit.
  • 151 BEngine Coolant Temperature - Data Valid but Above Normal Operational Range - Most Severe Level
  • 151 BMEngine Coolant Temperature - Data Valid but Above Normal Operational Range - Most Severe Level
  • 151 (Marine)Engine Coolant Temperature - Data Valid but Above Normal Operational Range - Most Severe Level. Engine coolant temperature signal indicates engine coolant temperature above engine protection critical limit.
  • 152Engine Coolant Temperature - Data Valid But Below Normal Operational Range - Least Severe Level. Engine coolant temperature is below normal operating temperature limits
  • 153Intake Manifold Air Temperature Sensor Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at intake manifold air temperature circuit.
  • 1539Auxiliary Pressure Sensor Input 1 Circuit - Voltage Above Normal or Shorted to High Source.
  • 154Intake Manifold Air Temperature Sensor Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at intake manifold air temperature circuit.
  • 1542Auxiliary Pressure Sensor Input 1 Circuit - Voltage Above Normal or Shorted to High Source
  • 1543Auxiliary Pressure Sensor Input 1 Circuit - Voltage Below Normal or Shorted to Low Source
  • 1544Auxiliary Pressure Sensor Input 1 - Special Instructions
  • 155Intake Manifold 1 Temperature - Data Valid but Above Normal Operational Range - Most Severe Level. Intake manifold air temperature signal indicates intake manifold air temperature above engine protection critical limit.
  • 155 (Auto)Intake Manifold 1 Temperature - Data Valid But Above Normal Operating Range - Most Severe Level. Intake manifold air temperature signal indicates intake manifold air temperature above engine protection critical limit.
  • 155 BIntake Manifold 1 Temperature - Data Valid But Above Normal Operating Range - Most Severe Level
  • 155 BMIntake Manifold 1 Temperature - Data Valid but Above Normal Operational Range - Most Severe Level
  • 155 (Marine)Intake Manifold 1 Temperature - Data Valid but Above Normal Operational Range - Most Severe Level. Intake manifold air temperature signal indicates intake manifold air temperature above engine protection critical limit.
  • 156Intake Manifold 2 Temperature Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 157Intake Manifold 2 Temperature Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 158Intake Manifold 2 Temperature - Data Valid but Above Normal Operational Range - Most Severe Level
  • 159Right Bank Front Intake Manifold Temperature Sensor Circuit
  • 1595Remote Accelerator Pedal or Lever Position Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source
  • 1596Auxiliary Temperature Sensor Input 1 Circuit - Voltage Below Normal or Shorted to Low Source
  • 1597Engine Control Module Critical Internal Failure - Bad intelligent device or component
  • 161Right Bank Front Intake Manifold Temperature Sensor Circuit
  • 1621Auxiliary Pressure Sensor Input 1 Circuit - Voltage Below Normal or Shorted to Low Source.
  • 163Right Bank Rear Intake Manifold Temperature Sensor Circuit
  • 1633Komnet Datalink Cannot Transmit - Data Erratic, Intermittent, or Incorrect. Communications within the OEM datalink network is intermittent.
  • 1639Auxiliary Equipment Sensor Input Number 3 (OEM Switch) - Root Cause Not Known.
  • 164Right Bank Rear Intake Manifold Temperature Sensor Circuit
  • 1654Engine Misfire Cylinder 1- Condition Exists. Engine misfire has been detected in cylinder number 1.
  • 1655Engine Misfire Cylinder 2 - Condition Exists. Engine misfire has been detected in cylinder number 2.
  • 1656Engine Misfire Cylinder 3 - Condition Exists. Engine misfire has been detected in cylinder number 3.
  • 1657Engine Misfire Cylinder 4 - Condition Exists. Engine misfire has been detected in cylinder number 4.
  • 1658Engine Misfire Cylinder 5 - Condition Exists. Engine misfire has been detected in cylinder number 5.
  • 1659Engine Misfire Cylinder 6 - Condition Exists. Engine misfire has been detected in cylinder number 6.
  • 166Fuel Rack Position 1 Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 1663Catalyst Inlet Temperature Sensor Swapped with Outlet — Condition Exists. The inlet and outlet catalyst temperature sensor connections are swapped.
  • 1664Catalyst Missing — Condition Exists. The aftertreatment catalyst in the exhaust system is not present.
  • 1665Aftertreatment Exhaust Gas Temperature 1 Circuit - Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the catalyst inlet sensor circuit.
  • 1666Aftertreatment Exhaust Gas Temperature 1 Circuit - Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the catalyst inlet temperature sensor circuit.
  • 1667Aftertreatment Exhaust Gas Temperature 1 - Data Erratic, Intermittent, or Incorrect. The aftertreatment diesel oxidation catalyst inlet temperature sensor is not changing with engine operating conditions.
  • 1668Catalyst Tank Level Sensor Circuit — Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the catalyst tank level sensor circuit.
  • 1668-2Aftertreatment 1 Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 1668 (2 Wire)Aftertreatment Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 1668 (2-Wire Sensor)Aftertreatment 1 Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 1668-3Aftertreatment 1 Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 1668 (3 Wire)Aftertreatment Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 1668 (3-Wire Sensor)Aftertreatment 1 Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 1668 (Multiplexed)Aftertreatment 1 Diesel Exhaust Fluid Tank Level Sensor Circuit- Voltage Below Normal or Shorted to Low Source
  • 1669Catalyst Tank Level Sensor Circuit — Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the catalyst tank level sensor circuit.
  • 1669-2Aftertreatment 1 Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 1669 (2 Wire)Aftertreatment Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 1669 (2-Wire Sensor)Aftertreatment 1 Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 1669-3Aftertreatment 1 Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 1669 (3 Wire)Aftertreatment 1 Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 1669 (3-Wire Sensor)Aftertreatment 1 Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 1669 (Air Assisted)Aftertreatment Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 1669 (Airless)Aftertreatment Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 1669 (Multiplexed)Aftertreatment 1 Diesel Exhaust Fluid Tank Level Sensor Circuit- Voltage Above Normal or Shorted to High Source
  • 167Fuel Rack Position 1 Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 1671Catalyst Tank Level — Data Valid but Below Normal Operational Range — Moderately Severe Level. Low catalyst solution level has been detected in the catalyst solution tank.
  • 1673Catalyst Tank Level — Data Valid but Below Normal Operational Range — Most Severe Level. No catalyst solution has been detected in the catalyst solution tank.
  • 1674Aftertreatment Exhaust Gas Temperature 2 Circuit - Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the aftertreatment diesel particulate filter inlet temperature sensor circuit.
  • 1675Aftertreatment Exhaust Gas Temperature 2 Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at the aftertreatment diesel particulate filter (DPF) inlet temperature sensor circuit.
  • 1676Aftertreatment Exhaust Gas Temperature 2 - Data Erratic, Intermittent, or Incorrect. The aftertreatment diesel particulate filter inlet temperature sensor is not changing with engine operating conditions.
  • 1677Catalyst Tank Temperature — Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the catalyst solution temperature sensor circuit.
  • 1677 (Air Assisted)Aftertreatment Diesel Exhaust Fluid Tank Temperature Sensor - Voltage Below Normal or Shorted to Low Source
  • 1677 (Airless)Aftertreatment Diesel Exhaust Fluid Tank Temperature Sensor - Voltage Below Normal or Shorted to Low Source
  • 1677-HardwiredAftertreatment 1 Diesel Exhaust Fluid Tank Temperature Sensor- Voltage Below Normal or Shorted to Low Source
  • 1677 (HW)Aftertreatment 1 Diesel Exhaust Fluid tank Temperature Sensor- Voltage Below Normal or Shorted to Low Source
  • 1677 (Multiplexed)Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature Sensor- Voltage Below Normal or Shorted to Low Source
  • 1678Catalyst Tank Temperature — Voltage Above Normal, or Shorted to High Source. High signal voltage or open circuit detected at the catalyst tank temperature sensor circuit
  • 1678 (Air Assisted)Aftertreatment Diesel Exhaust Fluid Tank Temperature Sensor - Voltage Above Normal or Shorted to High Source
  • 1678 (Airless)Aftertreatment Diesel Exhaust Fluid Tank Temperature Sensor - Voltage Above Normal or Shorted to High Source
  • 1678-HardwiredAftertreatment 1 Diesel Exhaust Fluid Tank Temperature Sensor- Voltage Above Normal or Shorted to High Source
  • 1678 (HW)Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature Sensor- Voltage Above Normal or Shorted to High Source
  • 1678 (Multiplexed)Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature Sensor- Voltage Above Normal or Shorted to High Source
  • 1679Catalyst Tank Temperature — Data Erratic, Intermittent, or Incorrect. The catalyst solution temperature sensor is not changing with engine operating conditions.
  • 1679 (Air Assisted)Aftertreatment Diesel Exhaust Fluid Tank Temperature - Data Erratic, Intermittent, or Incorrect
  • 1679 (Airless)Aftertreatment Diesel Exhaust Fluid Tank Temperature - Data Erratic, Intermittent, or Incorrect
  • 1679-HardwiredAftertreatment 1 Diesel Exhaust Fluid Tank Temperature- Data Erratic, Intermittent, or Incorrect
  • 1679 (HW)Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature- Data Erratic, Intermittent, or Incorrect
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