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Section2-1Diagnostic Fault Codes For Cummins EnginesApplies to Engine Models QSB T2, QSC T2, QSL T2, QSM11, QSX15, QSK19, QSK23, QST30, QSK45/60/78Note: These fault codes are current at date of publication. Always refer to engine service manual for the latest informationrelated to engine diagnostics and troubleshooting. Contact your local Cummins dealer for more information.80-1044 Rev 5/2013FaultSeverityLevelFault SeverityFunctionAction To Be Taken By Operator1StopStop Engine Now – Damage Imminent2WarningWarning – Engine May Continue to Run,but Must Be Repaired the Same Day3MaintenanceMaintenance – Repair At The Next PM4None- InformationOnlyNone – No Lamp Action1
Engine Timing Actuator is notresponding to ECM commandsXXEngine Timing Actuator Circuit - shortedhighXXEngine Timing Actuator Circuit - shortedlowEngine Speed/Position Sensor Circuit lost both of two signals from themagnetic pickup sensorXHHP LevelNumber (**)333222222222XXXXXFuel Timing Pressure Sensor Circuit shorted highXXXX222Fuel Timing Pressure Sensor Circuit shorted lowXXXX222Fuel Pump Delivery Pressure SensorCircuit - shorted highXXXX333Fuel Pump Delivery Pressure SensorCircuit - shorted lowXXXX333XXXXXXXX222Engine Speed/Position Sensor Circuit lost one of two signals from themagnetic pickup sensorXXXIntake Manifold Pressure Sensor #1Circuit - shorted highXXXXXXXX222Intake Manifold Pressure Sensor #1Circuit - shorted lowXXXXXXXX222X333X333High Intake Manifold Pressure RightBankX333Low Intake Manifold Pressure RightBankX333Right Bank Intake Manifold PressureSensor Circuit Failed HighX333High Intake Manifold Pressure Left BankLow Intake Manifold Pressure Left Bank(*) Denotes Cense Fault codes(**) HHP QSK45/60/78 Fault Severity Levels:Level 1: Stop Engine NowLevel 3: Repair at Next PMLevel 2: Repair Engine Same DayLevel 4: Information Only2XQSK7812QSK60(Red)Engine Control Module – Critical QSBFAULTCODE
)88148P091091(Red)88Right Bank Intake Manifold PressureSensor Circuit Failed HHP LevelNumber (**)X333Accelerator Pedal Position SensorCircuit - shorted highXXXXXXXX222Accelerator Pedal Position SensorCircuit - shorted lowXXXXXXXX222Remote Accelerator Pedal PositionSensor Circuit - shorted highXXXXX222222X222Pre Filter Oil Pressure Sensor CircuitFailed HighX333Pre Filter Oil Pressure Sensor CircuitFailed LowX333X222111Remote Accelerator Pedal PositionSensor Circuit - shorted highRemote Accelerator Pedal PositionSensor Circuit - shorted lowXXXXXEngine Oil Pressure Sensor Circuit shorted lowEngine Oil Pressure Low – WarningXXXXXXRemote Accelerator Pedal PositionSensor Circuit - shorted lowEngine Oil Pressure Sensor Circuit shorted highXXXXXXXXXXXXEngine Oil Pressure Low – WarningXXXXXXXXXXEngine Coolant Temperature SensorCircuit - shorted highXXXXXXXX222Engine Coolant Temperature SensorCircuit - shorted lowXXXXXXXX222Engine Coolant Temperature High –WarningXXXAccelerator Pedal Position SensorCircuit - low frequencyXXXXXXXX222Accelerator Pedal Position SensorCircuit - high frequencyXXXXXXXX222(*) Denotes Cense Fault codes(**) HHP QSK45/60/78 Fault Severity Levels:Level 1: Stop Engine NowLevel 3: Repair at Next PMLevel 2: Repair Engine Same DayLevel 4: Information Only3
)77XXXXEngine Coolant Temperature High –CriticalHHP LevelNumber (**)XXX111Intake Manifold Temperature Sensor #1Circuit - shorted highXXXXXXXX222Intake Manifold Temperature Sensor #1Circuit - shorted lowXXXXXXXX222Intake Manifold Temperature #1 High CriticalXXXXX111Left Bank Rear Intake Manifold TempSensor Circuit Failed High222Left Bank Rear Intake Manifold TempSensor Circuit Failed Low222High Intake Manifold Temp - Left BankRear111Right Bank Front Intake ManifoldTemperature Sensor Circuit Failed High222Right Bank Front Intake ManifoldTemperature Sensor Circuit Failed Low222High Intake Manifold Temperature Right Bank Front111Right Bank Rear Intake ManifoldTemperature Sensor Circuit Failed High222Right Bank Rear Intake ManifoldTemperature Sensor Circuit Failed Low222High Intake Manifold Temperature Right Bank Rear111Intake Manifold Temperature #1 High –CriticalXXXRack Position Sensor #1 Circuit shorted highXRack Actuator Position #1 Circuit grounded circuitXRack Actuator - mechanically stuck open(*) Denotes Cense Fault codes(**) HHP QSK45/60/78 Fault Severity Levels:Level 1: Stop Engine NowLevel 3: Repair at Next PMLevel 2: Repair Engine Same DayLevel 4: Information Only4XQSK780QSK60(Red)Engine Coolant Temperature High AULTCODEX
4227S232620(Yellow)33XXXQSK782QSK60(Yellow)Engine Control Module IdentificationInput State DEHHP LevelNumber (**)XEngine Control Module NetworkCommunication ErrorXSensor Supply Voltage #2 Circuit shorted lowAdditional OEM/Vehicle DiagnosticCodes have been logged. Check otherECM's for DTC's.OEM Component FailureXXXXXEngine Oil Temperature Sensor Circuit shorted highXXXXXX222222111222XEngine Oil Temperature High – CriticalLow Oil Level in the Centinel makeup oiltank3XEngine Oil Temperature Sensor Circuit shorted lowEngine Oil Temperature High - Critical3XEngine Oil Temperature Sensor Circuit shorted highEngine Oil Temperature Sensor Circuit shorted low3XLow Oil Level in the Centinel makeup oiltankXXAmbient Air Pressure Sensor Circuit –shorted highXXXXXXX222Ambient Air Pressure Sensor Circuit –shorted lowXXXXXXX222XXXX222XX222Engine Oil Burn Valve Solenoid Circuit –shorted lowEngine Oil Replacement Valve SolenoidCircuit - shorted lowSensor Supply Voltage #2 Circuit shorted highXX(*) Denotes Cense Fault codes(**) HHP QSK45/60/78 Fault Severity Levels:Level 1: Stop Engine NowLevel 3: Repair at Next PMLevel 2: Repair Engine Same DayLevel 4: Information Only5
(Yellow)33259S017632(Red)77Engine Coolant Pressure Sensor Circuit- shorted highXXX222Engine Coolant Pressure Sensor Circuit- shorted lowXXX222111333Engine Coolant Pressure Low – WarningEngine Speed High – CriticalEngine Coolant Level Low - CriticalXXXXXXXXXXEngine Coolant Level Low – CriticalExternal Speed Input (Multiple UnitSychronization) - data incorrectXVehicle Speed Sensor Circuit - dataincorrectXXXXXVehicle Speed Sensor Circuit tampering has been detectedXXXXXEngine Brake Driver #1 Circuit - shortedlowXXXXXXXXFan Clutch Circuit - shorted lowXXXXXXXX111XX222222111222222Engine Oil Level #1 Sensor Circuit - dataincorrectEngine Oil Level #1 Low – CriticalFuel Shutoff Valve Circuit - shorted lowXXFuel Shutoff Valve Circuit - shorted lowFuel Shutoff Valve Circuit - shorted highFuel Shutoff Valve - stuck open(**) HHP QSK45/60/78 Fault Severity Levels:Level 1: Stop Engine NowLevel 3: Repair at Next PMLevel 2: Repair Engine Same DayLevel 4: Information OnlyHHP LevelNumber (**)XEngine Coolant Pressure Low – Warning(*) Denotes Cense Fault SM11SID(S)QSBFAULTCODEXXXXXXXXX
)33QSK780QSK60(Yellow)Fuel Temperature High – FAULTCODEHHP LevelNumber (**)XFuel Temperature High – WarningFuel Temperature Sensor Circuit shorted highXXXX222Fuel Temperature Sensor Circuit shorted lowXXXX222Fuel Pressure Sensor Circuit - dataincorrectXXHigh Fuel Pressure Solenoid Valve #1Circuit - shorted lowXXHigh Fuel Pressure Solenoid Valve #1Circuit - shorted highXXHigh Fuel Pressure Solenoid Valve #2Circuit - shorted lowXXHigh Fuel Pressure Solenoid Valve #2Circuit - shorted highXXFuel Pumping Element #1 (Front) mechanically stuckXXFuel Injection Control Valve Circuit shorted highXXFuel Injection Control Valve mechanically stuckXXXXFuel Injection Control Valve Circuit shorted lowXXHigh Fuel Pressure Solenoid Valve #1 mechanically stuckXXHigh Fuel Pressure Solenoid Valve #2 mechanically stuckXXXXFuel Temperature Sensor Circuit - dataout-of-rangeFuel Priming Pump Control Circuit shorted high/lowEngine Speed/Position Sensor #1(Crankshaft) Supply Voltage Circuit shorted highXXX(*) Denotes Cense Fault codes(**) HHP QSK45/60/78 Fault Severity Levels:Level 1: Stop Engine NowLevel 3: Repair at Next PMLevel 2: Repair Engine Same DayLevel 4: Information Only7
XXXXXXXSAE J1939 Multiplexing ConfigurationErrorXXXXXSAE J1939 Multiplexing AcceleratorPedal Sensor System ErrorXXXXXSAE J1939 Multiplexing Remote ThrottleData ErrorXXXXXXX333XX333XX333XX333XX333HHP LevelNumber (**)XAuxiliary Temperature Sensor Input # 1Engine Protection - CriticalAuxiliary Temperature Sensor Input # 1Circuit – shorted highAuxiliary Temperature Sensor Input # 1Circuit – shorted highAuxiliary Temperature Sensor Input # 1Circuit – shorted highXXAuxiliary Temperature Sensor Input # 1Circuit – shorted lowAuxiliary Temperature Sensor Input # 1Circuit – shorted lowAuxiliary Temperature Sensor Input # 1Circuit – shorted lowXXAmbient Air Pressure Sensor Circuit data incorrectXXAuxiliary Pressure Sensor Input # 2Engine Protection - CriticalXXXAuxiliary Pressure Sensor Input # 2Engine Protection - CriticalAuxiliary Pressure Sensor Input # 2Circuit – shorted highXXXAuxiliary Pressure Sensor Input # 2Circuit – shorted highAuxiliary Pressure Sensor Input # 2Circuit – shorted low(*) Denotes Cense Fault codes(**) HHP QSK45/60/78 Fault Severity Levels:Level 1: Stop Engine NowLevel 3: Repair at Next PMLevel 2: Repair Engine Same DayLevel 4: Information Only8QSK784QSK60(Yellow)Engine Speed/Position Sensor #1(Crankshaft) Supply Voltage Circuit shorted lowSAE J1939 Multiplexing PGN BFAULTCODEXXXXX
XQSK784QSK60(Yellow)Auxiliary Pressure Sensor Input # 2Circuit – shorted EHHP LevelNumber (**)333XX333Fuel Supply Pump Actuator Circuit shorted highXX333Fuel Supply Pump Actuator –mechanically stuckXX222Engine Shutdown Commanded byJ1939Engine Shutdown Commanded byJ1939XXInjector Solenoid Valve Cylinder #1Circuit – grounded circuitXXInjector Solenoid Valve Cylinder #5Circuit – grounded circuitXXInjector Solenoid Valve Cylinder #3Circuit – grounded circuitXXInjector Solenoid Valve Cylinder #6Circuit - grounded circuitXXInjector Solenoid Valve Cylinder #2Circuit – grounded circuitXXReal Time Clock - Power InterruptXXXXInjector Solenoid Valve Cylinder #4Circuit - grounded circuitXInjector Solenoid Valve Cylinder #1Circuit - open circuitXInjector Solenoid Valve Cylinder #5Circuit – open circuitXInjector Solenoid Valve Cylinder #3Circuit – open circuitXInjector Solenoid Valve Cylinder #6Circuit – open circuitXFuel Pumping Element #2 (Rear) mechanically stuckFuel System Leakage errorXXXXX(*) Denotes Cense Fault codes(**) HHP QSK45/60/78 Fault Severity Levels:Level 1: Stop Engine NowLevel 3: Repair at Next PMLevel 2: Repair Engine Same DayLevel 4: Information Only9
S233
(*) Denotes Cense Fault codes (**) HHP QSK45/60/78 Fault Severity Levels: Level 1: Stop Engine Now Level 3: Repair at Next PM Level 2: Repair Engine Same Day Level 4: Information Only FAULT CODE (LAMP) SID(S) PID(P) FMI SPN FMI DESCRIPTION QSB QSC QSL9 QSM1 1 QSX1 5 QSK19 QSK23 QS T 30 QSK45 QSK60 QSK78 HHP Level Number (**) 111 (Red) S254 12 629 12
