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Cummins Fault Codes List: 1923 to 2216

Page 4 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 1923 to 2216

  • 1923Aftertreatment Fuel Shutoff Valve 1 Circuit - Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the aftertreatment fuel shutoff valve circuit.
  • 1924Aftertreatment Fuel Shutoff Valve 1 Circuit - Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the aftertreatment fuel shutoff valve circuit.
  • 1925Aftertreatment Fuel Shutoff Valve 1 - Data Erratic, Intermittent, or Incorrect
  • 1925 (ISM)Aftertreatment Fuel Shutoff Valve 1 - Data Erratic, Intermittent, or Incorrect. An error has been detected in the aftertreatment fuel shutoff valve.
  • 1925 (ISX)Aftertreatment Fuel Shutoff Valve 1 - Data Erratic, Intermittent, or Incorrect. An error has been detected in the aftertreatment fuel shutoff valve.
  • 1926Aftertreatment 1 Fuel Pressure Sensor - Data Erratic, Intermittent, or Incorrect. The ECM has detected that the aftertreatment fuel pressure signal is not changing with engine operating conditions.
  • 1927Aftertreatment 1 Fuel Pressure Sensor - Voltage Above Normal, or Shorted to High Source. High signal voltage detected at the aftertreatment fuel pressure sensor circuit.
  • 1928Aftertreatment 1 Fuel Pressure Sensor - Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the aftertreatment fuel pressure sensor circuit.
  • 1932Aftertreatment Fuel Injection System - Data Erratic, Intermittent, or Incorrect. An error has been detected in either the aftertreatment fuel injector or the aftertreatment fuel shutoff valve system.
  • 1933ECU Power Output Supply Voltage 2 - Data Valid but Above Normal Operational Range - Moderately Severe Level. High battery voltage detected by the EGR valve.
  • 1934ECU Power Output Supply Voltage 2 - Data Valid but Below Normal Operational Range - Moderately Severe Level. Low battery voltage detected by the EGR valve.
  • 1935EGR Actuator Driver Circuit - Root Cause Not Known. Intermittent communication between the smart EGR valve controller and the ECM has been detected.
  • 1938ECU Power Output Supply Voltage 1 - Data Valid but Below Normal Operational Range - Moderately Severe Level. Low battery voltage detected by the VGT actuator.
  • 1939ECU Power Output Supply Voltage 1 - Voltage Above Normal or Shorted to High Source
  • 1941ECU Power Output Supply Voltage 1- Voltage Below Normal or Shorted to low Source
  • 1942Crankcase Pressure - Data Erratic, Intermittent, or Incorrect. The ECM has detected that the crankcase pressure signal is not changing with engine operating conditions.
  • 1943Ambient Air Density - Data Valid but Below Normal Operational Range - Least Severe Level. Engine torque has been reduced because the vehicle was operating at a high altitude condition.
  • 195Three Wire Sensor Coolant Level Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source
  • 195 (2 Wire)Coolant Level Sensor 1 Circuit - Voltage Above Normal, or Shorted to High Source. High signal voltage detected at engine coolant level circuit.
  • 195 (2 wires)Coolant Level Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at engine coolant level circuit.
  • 195 (2-Wire Sensor)Coolant Level Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at engine coolant level circuit.
  • 195-3Coolant Level Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source
  • 195 (3 Wire)Coolant Level Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at the engine coolant level circuit
  • 195 (3 wires)Coolant Level Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at engine coolant level circuit.
  • 195 (3-Wire Sensor)Coolant Level Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage detected at engine coolant level circuit.
  • 195 3wire snsorCoolant Level Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source
  • 196Three Wire Sensor Coolant Level Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source
  • 1961EGR Valve Control Circuit Calculated Over Temperature - Data Valid but Above Normal Operational Range - Least Severe Level. The EGR valve has detected a high temperature condition.
  • 1962VGT Actuator Driver Over Temperature (Calculated) - Data Valid but Above Normal Operational Range - Least Severe Level. High Internal VGT actuator temperature has been detected.
  • 196 (2 Wire)Coolant Level Sensor 1 Circuit - Voltage Below Normal, or Shorted to Low Source. Low signal voltage detected at the engine coolant level circuit.
  • 196 (2 wires)Coolant Level Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the engine coolant level circuit.
  • 196 (2-Wire Sensor)Coolant Level Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the engine coolant level circuit.
  • 1963Aftertreatment Fuel Shutoff Valve 1 - Mechanical System Not Responding Properly or Out of Adjustment
  • 1963 (ISM)Aftertreatment Fuel Shutoff Valve 1 - Mechanical System Not Responding Properly or Out of Adjustment. The aftertreatment fuel shutoff valve has been detected to be stuck closed.
  • 1963 (ISX)Aftertreatment Fuel Shutoff Valve 1 - Mechanical System Not Responding Properly or Out of Adjustment. The aftertreatment fuel shutoff valve has been detected to be stuck closed.
  • 196 (3 Wire)Coolant Level Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the engine coolant level circuit.
  • 196 (3 wires)Coolant Level Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at engine coolant level circuit.
  • 196 (3-Wire Sensor)Coolant Level Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at engine coolant level circuit.
  • 1964Aftertreatment Doser - Mechanical System Not Responding or Out of Adjustment
  • 1966Aftertreatment Exhaust Gas Temperature 1 - Data Valid but Above Normal Operational Range - Most Severe Level. Engine exhaust gas temperatures entering the aftertreatment system are above the engine protection limits.
  • 1968Aftertreatment Exhaust Gas Temperature 2 - Data Valid but Above Normal Operational Range - Moderately Severe Level. The aftertreatment diesel particulate filter inlet temperature sensor reading has exceeded the maximum temperature limit.
  • 1969Aftertreatment Exhaust Gas Temperature 2 - Data Valid but Above Normal Operational Range - Most Severe Level. The aftertreatment diesel particulate filter inlet temperature sensor reading has exceeded the maximum engine protection temperature limit.
  • 197Coolant Level - Data Valid but Below Normal Operational Range - Moderately Severe Level. Low engine coolant level detected.
  • 1972Exhaust Gas Temperature 3 - Data Valid but Above Normal Operational Range - Moderately Severe Level. The aftertreatment diesel particulate filter outlet temperature sensor reading has exceeded the maximum temperature limit.
  • 1973Exhaust Gas Temperature 3 - Data Valid but Above Normal Operational Range - Most Severe Level. The aftertreatment diesel particulate filter outlet temperature sensor reading has exceeded the maximum engine protection temperature limit.
  • 1974Crankcase Pressure - Data Valid but Above Normal Operational Range - Least Severe Level. The crankcase breather filter requires maintenance.
  • 1976VGT Actuator Driver Temperature - Data Valid But Above Normal Operating Range - Least Severe Level
  • 1977Aftertreatment Fuel Injector 1 Circuit - Current Below Normal, or Open Circuit. High resistance, short circuit, or open circuit detected on the aftertreatment fuel injector circuit.
  • 1978Generator Speed/Load Governing Bias Circuit - Voltage Above Normal or Shorted to High Source
  • 1979Generator Speed/Load Governing Bias Circuit - Voltage Below Normal or Shorted to Low Source
  • 198High voltage detected at the ICON™ lamp circuit when low voltage was expected by the ECM.
  • 1981Aftertreatment Particulate Filter Differential Pressure - Data Valid but Above Normal Operational Range - Least Severe Level. The aftertreatment differential pressure has exceeded the maximum operating limits or the diesel particulate filter is plugged.
  • 1981 (BCL)Aftertreatment Diesel Particulate Filter System - Data Valid But Above Normal Operating Range - Least Severe Level
  • 1981 (CPL)Aftertreatment Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Least Severe Level
  • 1981 (CPL 3774 & 3775)Aftertreatment Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Least Severe Level. The aftertreatment differential pressure has exceeded the maximum operating limits or the diesel particulate filter is plugged.
  • 1981 (NON CPL)Aftertreatment Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Least Severe Level
  • 1981 (Non CPL 3774 & 3775)Aftertreatment Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range - Least Severe Level. The aftertreatment differential pressure has exceeded the maximum operating limits or the diesel particulate filter is plugged.
  • 1981 (X)Aftertreatment Diesel Particulate Filter System - Data Valid But Above Normal Operating Range - Least Severe Level
  • 1984Intake Manifold 2 Temperature - Data Valid but Above Normal Operational Range - Moderately Severe Level
  • 199Less than (+) 6 VDC (low voltage) detected at the ICON™ lamp circuit when high voltage was expected by the ECM.
  • 1992Engine Crankshaft Speed/Position - Data Valid but Above Normal Operational Range - Moderately Severe Level. Engine crankshaft speed/position SIGNAL indicates engine speed above engine protection limit.
  • 1993Aftertreatment Diesel Particulate Filter Missing - Condition Exists. The aftertreatment diesel particulate filter in the exhaust system is not present.
  • 2Exhaust Gas Pressure Sensor Number 1 Circuit - Voltage Below Normal, or Shorted to Low Source
  • 212Engine Oil Temperature Sensor 1 Circuit - Voltage Above Normal or Shorted to High Source. High signal voltage or an open circuit detected at the engine oil temperature circuit.
  • 213Engine Oil Temperature Sensor 1 Circuit - Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the engine oil temperature circuit.
  • 214Engine Oil Temperature High - Data Valid But Above Normal Operational Range - Most Severe Level. Engine oil temperature signal indicates engine oil temperature above engine protection critical limit.
  • 2154Post-Filter Oil Pressure Sensor Circuit
  • 2155Post-Filter Oil Pressure Sensor Circuit
  • 216High voltage detected at air compressor wet tank pressure signal circuit.
  • 217Low voltage detected at air compressor wet tank pressure sensor.
  • 218Voltage at wet tank pressure signal indicates wet tank pressure is too high or too low.
  • 2182Engine Brake Actuator Driver 1 Circuit - Voltage Above Normal, or Shorted to High Source. High voltage or an open circuit detected at the engine brake solenoid number 1 signal circuit.
  • 2182 (HD)Engine Brake Actuator Driver 1 Circuit - Voltage Above Normal or Shorted to High Source
  • 2182 (Heavy Duty)Engine Brake Actuator Driver 1 Circuit - Voltage Above Normal or Shorted to High Source
  • 2182 (ISM)Engine Brake Actuator Driver 1 Circuit - Voltage Above Normal or Shorted to High Source
  • 2182 (Midrange)Engine Brake Actuator Driver 1 Circuit - Voltage Above Normal or Shorted to High Source
  • 2182 (MR)Engine Brake Actuator Driver 1 Circuit - Voltage Above Normal or Shorted to High Source
  • 2183Engine Brake Actuator Driver 1 Circuit - Voltage Below Normal, or Shorted to Low Source. Low voltage detected at the engine brake solenoid number 1 signal circuit.
  • 2183 (HD)Engine Brake Actuator Driver 1 Circuit - Voltage Below Normal or Shorted to Low Source
  • 2183 (Heavy Duty)Engine Brake Actuator Driver 1 Circuit - Voltage Below Normal or Shorted to Low Source
  • 2183 (ISM)Engine Brake Actuator Driver 1 Circuit - Voltage Below Normal or Shorted to Low Source
  • 2183 (Midrange)Engine Brake Actuator Driver 1 Circuit - Voltage Below Normal or Shorted to Low Source
  • 2183 (MR)Engine Brake Actuator Driver 1 Circuit - Voltage Below Normal or Shorted to Low Source
  • 2185Sensor Supply Voltage 4 Circuit - Voltage Above Normal or Shorted to High Source. High voltage detected at +5 volt sensor supply circuit to the accelerator pedal position sensor.
  • 2186Sensor Supply Voltage 4 Circuit - Voltage Below Normal or Shorted to Low Source. Low voltage detected at +5 VDC sensor supply circuit to the accelerator pedal position sensor.
  • 219Engine Oil Level Number 2 (Remote) Low - Maintenance. Low oil level detected in the Centinel™ makeup oil tank.
  • 2191Intake Manifold 1 Pressure Sensor- Condition Exists
  • 2191 (HD)Intake Manifold 1 Pressure Sensor - Condition Exists
  • 2191 Heavy DutyIntake Manifold 1 Pressure Sensor - Condition Exists
  • 2194OEM pressure signal at pin 48 of the OEM harness indicates pressure outside the engine protection limit.
  • 2195Auxiliary Equipment Sensor Input Engine Protection Critical - Special Instructions. OEM switch signal on the OEM harness indicates engine protection condition.
  • 2198VGT Actuator Driver Circuit - Root Cause Not Known. Intermittent communication between the smart VGT controller and the ECM has been detected. The VGT controller is not interpreting the J1939 message from the ECM correctly.
  • 2199Engine Speed - Abnormal Rate of Change
  • 221Barometric Pressure Sensor Circuit - Voltage Above Normal or Shorted to High Source. High voltage detected at the barometric pressure sensor signal pin 32 of the engine harness.
  • 2215(ISC/QSC/ISL/QSL Automotive, Industrial, or Marine Application) Fuel Pump Delivery Pressure Low - Data Valid but Below Normal Operational Range - Moderately Severe Level
  • 2215 BFuel Pump Delivery Pressure - Data Valid But Below Normal Operational Range - Moderately Severe Level
  • 2215 CLFuel Pump Delivery Pressure Low - Data Valid but Below Normal Operational Range - Moderately Severe Level
  • 2215 (ISB)Fuel Pump Delivery Pressure - Data Valid but Below Normal Operational Range - Moderately Severe Level. The ECM has detected the fuel pressure in the fuel rail is lower than the commanded performance.
  • 2215 (ISC)Fuel Pump Delivery Pressure Low - Data Valid but Below Normal Operational Range - Moderately Severe Level. The ECM has detected that fuel pressure is lower than commanded pressure.
  • 2216(ISC/QSC/ISL/QSL Automotive, Industrial or Marine Application) Fuel Pump Delivery Pressure High - Data Valid but Above Normal Operational Range - Moderately Severe Level
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