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Cummins Fault Codes List: 1679 (Multiplexed) to 1922 (X)

Page 3 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 1679 (Multiplexed) to 1922 (X)

  • 1679 (Multiplexed)Aftertreatment 1 Diesel Exhaust Fluid Tank Temperature- Data Erratic, Intermittent, or Incorrect
  • 1681Catalyst Dosing Control Unit — Bad Intelligent Device or Component. An internal error has been detected in the catalyst dosing control unit.
  • 1682Aftertreatment Diesel Exhaust Fluid Dosing Unit Input Lines - Condition Exists. An error has been detected by the catalyst dosing control unit.
  • 1682 (Air Assisted)Aftertreatment Diesel Exhaust Fluid Dosing Unit Input Lines - Condition Exists
  • 1682 (Airless)Aftertreatment Diesel Exhaust Fluid Dosing Unit Input Lines - Condition Exists
  • 1683Catalyst Tank Heater Circuit — Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the catalyst tank heater relay sensor circuit.
  • 1683 (Air Assisted)Aftertreatment Diesel Exhaust Fluid Tank Heater - Voltage Above Normal or Shorted to High Source
  • 1683 (Airless)Aftertreatment Diesel Exhaust Fluid Tank Heater - Voltage Above Normal or Shorted to High Source
  • 1684Catalyst Tank Heater Circuit — Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the catalyst tank heater relay sensor circuit.
  • 1684 (Air Assisted)Aftertreatment Diesel Exhaust Fluid Tank Heater - Voltage Below Normal or Shorted to Low Source
  • 1684 (Airless)Aftertreatment Diesel Exhaust Fluid Tank Heater - Voltage Below Normal or Shorted to Low Source
  • 1685Aftertreatment Diesel Exhaust Fluid Quality Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 1686Aftertreatment Diesel Exhaust Fluid Quality Sensor Circuit - Voltage Above Normal or Shorted to High Source
  • 1687Catalyst Over Temperature - Data Valid but Above Normal Operational Range - Most Severe Level. Very high temperatures have been detected in the aftertreatment system.
  • 1688Aftertreatment Diesel Exhaust Fluid Controller - Bad Intelligent Device or Component.
  • 1689Real-Time Clock Power Interrupt - Data Erratic, Intermittent or Incorrect. The Real-Time clock power has been interrupted.
  • 1691Catalyst Efficiency - Out of Calibration. The temperature increase across the aftertreatment diesel oxidation catalyst is lower than expected.
  • 1691 (BCL)Aftertreatment Diesel Oxidation Catalyst Conversion Efficiency - Data Valid But Below Normal Operating Range - Moderately Severe Level
  • 1691 ISXAftertreatment Diesel Oxidation Catalyst Conversion Efficiency - Data Valid But Below Normal Operating Range - Moderately Severe Level
  • 1691 (X)Aftertreatment Diesel Oxidation Catalyst Conversion Efficiency- Data Valid But Below Normal Operating Range- Moderately severe Level
  • 1692Aftertreatment NOx Sensor - Voltage Below Normal, or Shorted to Low Source. Out-of-range battery voltage has been detected by the aftertreatment outlet NOx sensor.
  • 1694Aftertreatment Outlet NOx Sensor - Data Erratic, Intermittent, or Incorrect. An incorrect NOx sensor reading has been detected by the aftertreatment outlet NOx sensor.
  • 1695Sensor Supply 5 - Voltage Above Normal, or Shorted to High Source. High voltage detected at sensor supply number 5 circuit in the OEM harness.
  • 1696Sensor Supply 5 - Voltage Below Normal or Shorted to Low Source. Low voltage detected at sensor supply number 5 circuit in the OEM harness.
  • 1697Aftertreatment #1 Air Enable Actuator — Voltage Above Normal, or Shorted to High Source. High signal voltage has been detected at the catalyst air solenoid circuit.
  • 1698Aftertreatment #1 Air Enable Actuator — Voltage Below Normal, or Shorted to Low Source. Low signal voltage has been detected at the catalyst air solenoid circuit.
  • 1699Catalyst Tank Level Sensor - Data Erratic, Intermittent, or Incorrect. Catalyst solution level is not changing with engine operating conditions.
  • 1711Dosing Control Unit Data Link — Abnormal Update Rate. Data Link communications between the ECM and the Dosing Control Unit have been interrupted.
  • 1712Catalyst Tank Heater Circuit — Data Valid But Below Normal Operating Range — Moderately Severe Level. The catalyst solution temperature did not increase when the catalyst tank heater was commanded on.
  • 1713Catalyst Tank Heater Circuit - Data Valid But Above Normal Operating Range - Moderately Severe Level. The catalyst tank heater is continuously in the on position.
  • 1714Aftertreatment Diesel Exhaust Fluid Quality - Out of Calibration
  • 1715Aftertreatment Diesel Exhaust Fluid Quality - Root Cause Not Known
  • 1716Auxiliary Temperature Sensor Input 1 Circuit - Root Cause Not Known. High temperature detected by the OEM temperature sensor or by the engine coolant temperature sensor.
  • 1717Exhaust Gas Temperature 1 — Data Valid but Above Normal Operational Range — Least Severe Level. High catalyst inlet temperature has been detected.
  • 1718Engine Misfire for Multiple Cylinders — Condition Exists. Engine misfire has been detected in multiple cylinder numbers.
  • 172Fuel Rack Actuator Driver - Mechanical System Not Responding or Out of Adjustment
  • 173Fuel Rack Actuator Driver Mechanically Stuck Closed - Data Valid but Below Normal Operating Range - Moderately Severe Level
  • 175Electronic Throttle Control Actuator Driver Circuit - Voltage Above Normal or Shorted to High Source.
  • 176Electronic Throttle Control Actuator Driver Circuit - Voltage Below Normal or Shorted to Low Source.
  • 177Electronic Throttle Control Actuator - Mechanical System Not Responding or Out of Adjustment.
  • 1774Engine Oil Priming Pump Control Circuit - Voltage Above Normal or Shorted to High Source
  • 1776Power Relay Driver Circuit- Voltage Above Normal or Shorted to High Source
  • 1777Power Relay Driver Circuit- Voltage Below Normal or Shorted to Low Source
  • 184Engine Control Module Identification Input State Error - Data Erratic, Intermittent, or Incorrect
  • 1843Crankcase Pressure Circuit - Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the crankcase pressure circuit.
  • 1844Crankcase Pressure Circuit - Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the crankcase pressure circuit.
  • 1845Water-in-Fuel Indicator Sensor Circuit - Voltage Above Normal or Shorted to High Source (For Generator Engines Only). High voltage detected at the water-in-fuel indicator circuit.
  • 1846Water-in-Fuel Indicator Sensor Circuit - Voltage Below Normal or Shorted to Low Source (For Generator Engines Only). Low voltage detected at the water-in-fuel indicator circuit.
  • 1847Engine Coolant Temperature - Special Instructions
  • 1848Intake Manifold 1 Temperature — Abnormal Rate of Change. The intake manifold temperature sensor is not responding to a change in engine operating conditions.
  • 1849Exhaust Gas Temperature 1 — Abnormal Rate of Change. The catalyst inlet temperature sensor is not responding to a change in engine operating conditions.
  • 185Engine Control Module Network Communication Error - Data Erratic, Intermittent, or Incorrect
  • 1851Exhaust Gas Temperature 2 — Abnormal Rate of Change. The catalyst outlet temperature sensor is not responding to a change in engine operating conditions.
  • 1852Water In Fuel Indicator - Data Valid but Above Normal Operational Range - Moderately Severe Level
  • 1866Exhaust Gas Recirculation Valve Delta Pressure - Data Erratic, Intermittent, or Incorrect. An error in the EGR delta pressure signal was detected at initial key-on or the sensor failed the autozero test.
  • 1867Engine Gas Recircuilation Temperature - Data Erratic, Intermittent, or Incorrect
  • 187(ISB/QSB Automotive and Industrial, ISC/QSC/ISL/QSL Automotive, Industrial, and Marine) Sensor Supply Voltage Number 2 Circuit - Voltage Below Normal or Shorted to Low Source
  • 1876Aftertreatment Exhaust Gas Temperature 3 Circuit - Voltage Above Normal, or Shorted to High Source. High signal voltage or open circuit detected at the aftertreatment diesel particulate filter outlet temperature sensor circuit.
  • 1877Aftertreatment Exhaust Gas Temperature 3 Circuit - Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the aftertreatment diesel particulate filter outlet temperature sensor circuit.
  • 1878Aftertreatment Exhaust Gas Temperature 3 - Data Erratic, Intermittent, or Incorrect. The aftertreatment diesel particulate filter outlet temperature sensor is not changing with engine operating conditions.
  • 1879Aftertreatment Particulate Filter Differential Pressure Sensor Circuit - Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the aftertreatment differential pressure sensor circuit.
  • 187 (Auto)Sensor Supply Voltage Number 2 Circuit - Voltage Below Normal or Shorted to Low Source. Low voltage detected at the sensor supply number 2 circuit.
  • 187 BSensor Supply Voltage Number 2 Circuit - Voltage Below Normal or Shorted to Low Source
  • 187 BMSensor Supply 2 Circuit - Voltage Below Normal, or Shorted to Low Source
  • 187 (ISM)Sensor Supply 2 Circuit - Voltage Below Normal or Shorted to Low Source. Low voltage detected at the sensor supply number 2 circuit.
  • 187 (ISX)Sensor Supply 2 Circuit - Voltage Below Normal, or Shorted to Low Source. Low voltage detected at the sensor supply number 2 circuit.
  • 187 (Marine)Sensor Supply 2 Circuit - Voltage Below Normal, or Shorted to Low Source. Low voltage detected at the sensor supply number 2 circuit.
  • 1881Aftertreatment Particulate Filter Differential Pressure Sensor Circuit - Voltage Below Normal, or Shorted to Low Source. Low signal voltage or open circuit detected at the aftertreatment differential pressure sensor circuit.
  • 1883Aftertreatment Diesel Particulate Filter Differential Pressure Sensor - Data Erratic, Intermittent, or Incorrect. The aftertreatment diesel particulate filter differential pressure sensor is reading an erratic value at initial key-ON or during engine operation.
  • 1885Aftertreatment 1 Intake NOx Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 1887Aftertreatment 1 Outlet NOx Sensor Circuit - Voltage Below Normal or Shorted to Low Source
  • 1888SAE J1939 Multiplexed Accelerator Pedal or Lever Sensor System - Received Network Data In Error
  • 1889SAE J1939 Multiplexing Remote Accelerator Pedal or Lever Sensor System - Received Network Data In Error
  • 1891Engine Oil Change Interval - Condition Exists
  • 1892Wheel-Based Vehicle Speed — Data Valid but Below Normal Operational Range — Moderately Severe Level. The ECM lost the vehicle speed signal.
  • 1893EGR Valve Control Circuit - Abnormal Update Rate. No communications or invalid data transfer rate detected on the SAE J1939 data link between the ECM and the smart EGR valve.
  • 1894VGT Actuator Driver Circuit- Abnormal Update Rate
  • 1895EGR Valve Controller - Bad Intelligent Device or Component. A calibration mismatch between the EGR valve and the ECM has been detected.
  • 1896EGR Valve Controller - Out of Calibration. The EGR valve has failed the automatic calibration procedure at initial key-on.
  • 1897VGT Actuator Controller- Bad Intelligent Device or Component
  • 1898VGT Actuator Controller - Out of Calibration.
  • 1899Exhaust Gas Recirculation (EGR) Valve Delta Pressure - Data Valid But Above Normal Operating Range - Moderately Severe Level. The EGR differential pressure sensor has detected low EGR gas flow or the EGR differential pressure reading is not valid for engine operating conditions.
  • 191Air conditioner clutch driver signal indicates a short to ground when commanded on.
  • 1911Injector Metering Rail Number 1 Pressure - Data Valid But Above Normal Operating Range - Most Severe Level. Fuel pressure signal indicates that fuel pressure has exceeded the maximum limit for the given engine rating.
  • 1911 (B)Injector Metering Rail 1 Pressure - Data Valid But Above Normal Operating Range - Most Severe Level
  • 1911 (BDF)Injector Metering Rail 1 Pressure - Data Valid But Above Normal Operating Range - Most Severe Level
  • 1911 (CLX)Injector Metering Rail 1 Pressure Circuit- Data Valid But Above Normal Operating Range- Most Severe Level
  • 1911 (CLXZ)Injector Metering Rail 1 Pressure Circuit - Data Valid but Above Normal Operating Range - Most Severe Level
  • 1911 (ISB)Injector Metering Rail 1 Pressure - Data Valid But Above Normal Operating Range - Most Severe Level
  • 1911 (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 rail fuel is higher than the commanded pressure.
  • 1911 (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 rail fuel is higher than the commanded pressure.
  • 1911 ISXInjector Metering Rail 1 Pressure Circuit - Data Valid But Above Normal Operating Range - Most Severe Level
  • 1911 (QSX)Injector Metering Rail 1 Pressure - Data Valid But Above Normal Operating Range - Most Severe Level
  • 1911 (X)Injector Metering Rail 1 Pressure Circuit- Data Valid but Above Normal Operating Range- Most Severe Level
  • 1921Aftertreatment Diesel Particulate Filter Differential Pressure - Data Valid but Above Normal Operational Range - Moderately Severe Level. The soot load of the aftertreatment diesel particulate filter has exceeded the recommended limits.
  • 1921 (BCL)Aftertreatment Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Moderately Severe Level
  • 1921 (X)Aftertreatment Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Moderately Severe Level
  • 1922Aftertreatment Diesel Particulate Filter Differential Pressure - Data Valid but Above Normal Operational Range - Most Severe Level. The soot load of the aftertreatment diesel particulate filter has exceeded the recommended limits.
  • 1922 (BCL)Aftertreatment Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Most Severe Level
  • 1922 (X)Aftertreatment Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Most Severe Level
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