Diagnostic Fault Codes For Cummins Engines

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1 Section - Diagnostic Fault Codes For Cummins Engines Applies to Engine Models T, T, QSL T, QSM, QS, QSK9, QSK, QST, QSK//8 Note: These fault codes are current at date of publication. Always refer to engine service manual for the latest information related to engine diagnostics and troubleshooting. Contact your local Cummins dealer for more information. Fault Severity Level Fault Severity Function Action To Be Taken By Operator Stop Stop Engine Now Damage Imminent Warning Warning Engine May Continue to Run, but Must Be Repaired the Same Day Maintenance Maintenance Repair At The Next PM None- Information Only None No Lamp Action 8- Rev /

2 S S S S P9 9 9 Engine Control Module Critical internal failure Engine Timing Actuator is not responding to ECM commands Engine Timing Actuator Circuit - shorted high Engine Timing Actuator Circuit - shorted low Engine Speed/Position Sensor Circuit - lost both of two signals from the magnetic pickup sensor QSM QS QSK9 QSK QST QSK QSK QSK8 8 9 P P P P P9 9 Fuel Timing Pressure Sensor Circuit - shorted high Fuel Timing Pressure Sensor Circuit - shorted low Fuel Pump Delivery Pressure Sensor Circuit - shorted high Fuel Pump Delivery Pressure Sensor Circuit - shorted low Engine Speed/Position Sensor Circuit - lost one of two signals from the magnetic pickup sensor * * * * 8* P P Intake Manifold Pressure Sensor # Circuit - shorted high Intake Manifold Pressure Sensor # Circuit - shorted low High Intake Manifold Pressure Left Bank Low Intake Manifold Pressure Left Bank High Intake Manifold Pressure Right Bank Low Intake Manifold Pressure Right Bank Right Bank Intake Manifold Pressure Sensor Circuit Failed High (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

3 9* * * 8 P9 P9 P9 P9 P9 P9 P P P P P P P P9 8 P Right Bank Intake Manifold Pressure Sensor Circuit Failed Low Accelerator Pedal Position Sensor Circuit - shorted high Accelerator Pedal Position Sensor Circuit - shorted low Remote Accelerator Pedal Position Sensor Circuit - shorted high Remote Accelerator Pedal Position Sensor Circuit - shorted high Remote Accelerator Pedal Position Sensor Circuit - shorted low Remote Accelerator Pedal Position Sensor Circuit - shorted low Engine Oil Pressure Sensor Circuit - shorted high Pre Filter Oil Pressure Sensor Circuit Failed High Pre Filter Oil Pressure Sensor Circuit Failed Low Engine Oil Pressure Sensor Circuit - shorted low Engine Oil Pressure Low Warning Engine Oil Pressure Low Warning QSM QS QSK9 QSK QST QSK QSK QSK8 Engine Coolant Temperature Sensor Circuit - shorted high Engine Coolant Temperature Sensor Circuit - shorted low Engine Coolant Temperature High Warning Accelerator Pedal Position Sensor Circuit - low frequency Accelerator Pedal Position Sensor Circuit - high frequency (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

4 * * 8* 9* * * * * * P P P P P P S S S 8 8 Engine Coolant Temperature High Critical QSM QS QSK9 QSK QST QSK QSK QSK8 Engine Coolant Temperature High Critical Intake Manifold Temperature Sensor # Circuit - shorted high Intake Manifold Temperature Sensor # Circuit - shorted low Intake Manifold Temperature # High - Critical Intake Manifold Temperature # High Critical Left Bank Rear Intake Manifold Temp Sensor Circuit Failed High Left Bank Rear Intake Manifold Temp Sensor Circuit Failed Low High Intake Manifold Temp - Left Bank Rear Right Bank Front Intake Manifold Temperature Sensor Circuit Failed High Right Bank Front Intake Manifold Temperature Sensor Circuit Failed Low High Intake Manifold Temperature - Right Bank Front Right Bank Rear Intake Manifold Temperature Sensor Circuit Failed High Right Bank Rear Intake Manifold Temperature Sensor Circuit Failed Low High Intake Manifold Temperature - Right Bank Rear Rack Position Sensor # Circuit - shorted high Rack Actuator Position # Circuit - grounded circuit Rack Actuator - mechanically stuck open (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

5 8 8 8 * * * * 9 Maint. 9 S S S S P P P P P P8 P8 S8 S8 S Engine Control Module Identification Input State Error Engine Control Module Network Communication Error Sensor Supply Voltage # Circuit - shorted low Additional OEM/Vehicle Diagnostic Codes have been logged. Check other ECM's for DTC's. OEM Component Failure Engine Oil Temperature Sensor Circuit - shorted high QSM QS QSK9 QSK QST QSK QSK QSK8 Engine Oil Temperature Sensor Circuit - shorted high Engine Oil Temperature Sensor Circuit - shorted low Engine Oil Temperature Sensor Circuit - shorted low Engine Oil Temperature High - Critical Engine Oil Temperature High Critical Low Oil Level in the Centinel makeup oil tank Low Oil Level in the Centinel makeup oil tank Ambient Air Pressure Sensor Circuit shorted high Ambient Air Pressure Sensor Circuit shorted low Engine Oil Burn Valve Solenoid Circuit shorted low Engine Oil Replacement Valve Solenoid Circuit - shorted low Sensor Supply Voltage # Circuit - shorted high (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

6 9 P9 P9 P9 P9 P9 P P S P8 P8 P S P98 P98 S S S S Engine Coolant Pressure Sensor Circuit - shorted high Engine Coolant Pressure Sensor Circuit - shorted low Engine Coolant Pressure Low Warning Engine Coolant Pressure Low Warning Engine Speed High Critical Engine Coolant Level Low - Critical Engine Coolant Level Low Critical QSM QS QSK9 QSK QST QSK QSK QSK8 External Speed Input (Multiple Unit Sychronization) - data incorrect Vehicle Speed Sensor Circuit - data incorrect Vehicle Speed Sensor Circuit - tampering has been detected Engine Brake Driver # Circuit - shorted low Fan Clutch Circuit - shorted low Engine Oil Level # Sensor Circuit - data incorrect Engine Oil Level # Low Critical Fuel Shutoff Valve Circuit - shorted low Fuel Shutoff Valve Circuit - shorted low Fuel Shutoff Valve Circuit - shorted high Fuel Shutoff Valve - stuck open (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

7 P P P P P P9 S S S S S S8 S8 P S8 S S S Fuel Temperature High Warning Fuel Temperature High Warning QSM QS QSK9 QSK QST QSK QSK QSK8 Fuel Temperature Sensor Circuit - shorted high Fuel Temperature Sensor Circuit - data out-of-range Fuel Temperature Sensor Circuit - shorted low Fuel Pressure Sensor Circuit - data incorrect High Fuel Pressure Solenoid Valve # Circuit - shorted low High Fuel Pressure Solenoid Valve # Circuit - shorted high High Fuel Pressure Solenoid Valve # Circuit - shorted low High Fuel Pressure Solenoid Valve # Circuit - shorted high Fuel Pumping Element # (Front) - mechanically stuck Fuel Injection Control Valve Circuit - shorted high Fuel Injection Control Valve - mechanically stuck Fuel Priming Pump Control Circuit - shorted high/low Fuel Injection Control Valve Circuit - shorted low High Fuel Pressure Solenoid Valve # - mechanically stuck High Fuel Pressure Solenoid Valve # - mechanically stuck Engine Speed/Position Sensor # (Crankshaft) Supply Voltage Circuit - shorted high (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

8 S S 9 S P9 P9 P S P S S P S P8 P P P P P Engine Speed/Position Sensor # (Crankshaft) Supply Voltage Circuit - shorted low SAE J99 Multiplexing PGN Timeout Error SAE J99 Multiplexing Configuration Error SAE J99 Multiplexing Accelerator Pedal Sensor System Error SAE J99 Multiplexing Remote Throttle Data Error QSM QS QSK9 QSK QST QSK QSK QSK8 Auxiliary Temperature Sensor Input # Engine Protection - Critical Auxiliary Temperature Sensor Input # Circuit shorted high Auxiliary Temperature Sensor Input # Circuit shorted high Auxiliary Temperature Sensor Input # Circuit shorted high Auxiliary Temperature Sensor Input # Circuit shorted low Auxiliary Temperature Sensor Input # Circuit shorted low Auxiliary Temperature Sensor Input # Circuit shorted low Ambient Air Pressure Sensor Circuit - data incorrect Auxiliary Pressure Sensor Input # Engine Protection - Critical Auxiliary Pressure Sensor Input # Engine Protection - Critical Auxiliary Pressure Sensor Input # Circuit shorted high Auxiliary Pressure Sensor Input # Circuit shorted high Auxiliary Pressure Sensor Input # Circuit shorted low (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only 8

9 Maint. 8 9 P S S S S S S S S8 S8 P S S S S S S S Auxiliary Pressure Sensor Input # Circuit shorted low Engine Shutdown Commanded by J99 Engine Shutdown Commanded by J99 Injector Solenoid Valve Cylinder # Circuit grounded circuit Injector Solenoid Valve Cylinder # Circuit grounded circuit Injector Solenoid Valve Cylinder # Circuit grounded circuit Injector Solenoid Valve Cylinder # Circuit - grounded circuit Injector Solenoid Valve Cylinder # Circuit grounded circuit Fuel Supply Pump Actuator Circuit - shorted high Fuel Supply Pump Actuator mechanically stuck Real Time Clock - Power Interrupt Injector Solenoid Valve Cylinder # Circuit - grounded circuit Injector Solenoid Valve Cylinder # Circuit - open circuit Injector Solenoid Valve Cylinder # Circuit open circuit Injector Solenoid Valve Cylinder # Circuit open circuit Injector Solenoid Valve Cylinder # Circuit open circuit QSM QS Fuel Pumping Element # (Rear) - mechanically stuck Fuel System Leakage error QSK9 QSK QST QSK QSK QSK8 (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only 9

10 9 9 S S S S S S P9 P9 S Injector Solenoid Valve Cylinder # Circuit open circuit Injector Solenoid Valve Cylinder # Circuit open circuit Engine Control Module data lost Engine Control Module out of calibration QSM QS QSK9 QSK QST QSK QSK QSK8 Engine Control Module - Warning internal hardware failure Engine Control Module - Warning Software error Transmission Output Shaft (Tailshaft) Speed High Warning Transmission Output Shaft (Tailshaft) Speed High Warning Sensor Supply Voltage # Circuit - shorted low S Fuel Pump Control Module, Fuel Control Valve Circuit - shorted high S Fuel Pump Control Module, Fuel Control Valve Circuit - shorted low S Fuel Pump Control Module, Fuel Control Valve - mechanically stuck S 9 9 Fuel Pump Control Module, CAN Communication Error - abnormal update rate S Fuel Pump Control Module, Supply Voltage Circuit - shorted low S Fuel Pump Control Module, Supply Voltage Circuit - data incorrect P9 8 Fuel Pump Control Module, Increment Angle Time Sensor Error 8 S Fuel Pump Control Module, Timing Error (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

11 QSM QS QSK9 QSK QST QSK QSK QSK8 9 P9 8 Fuel Pump Control Module, Engine Synchronization Error S Fuel Pump Control Module, Idle Validation Error S Fuel Pump Control Module, Fuel Shutoff Error S Fuel Pump Control Module, Self-Test Error S 9 Fuel Pump Control Module, Electronic Calibration Code Error S Fuel Pump Control Module, Fueling or Engine Speed Mismatch S Fuel Pump Control Module, Stuck Relay Error 8 S8 Fueling Actuator # Circuit - open circuit S8 S S S S S S S S S 9 Fueling Actuator # Circuit - grounded circuit Intake Air Heater (Relay Enable) # Circuit - data incorrect Intake Air Heater (Relay Enable) # Circuit - data incorrect Start Assist Device Control Circuit Error (Ether Injection) OEM Sensor Supply Voltage Circuit - shorted high Sensor Supply Voltage # Circuit - shorted high Accelerator Pedal Position Sensor Supply Voltage Circuit - shorted high Fan Clutch Circuit Error Fuel Shutoff Valve Supply Voltage error Timing Actuator # Circuit - open circuit (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

12 * Level 8 WIF / Maint. 9 * 8 S S8 S8 S8 S8 S P P P9 9 9 P P S 9 S 9 9 S 9 9 P9 9 Timing Actuator # Circuit - grounded circuit Fueling Actuator # Circuit - open circuit Fueling Actuator # Circuit - grounded circuit Timing Actuator # Circuit - open circuit Timing Actuator # Circuit - grounded circuit Data Communication error over the J8 data link Circuit Engine Oil Pressure Low Critical Engine Oil Pressure Low Critical Water in Fuel Indicator High Maintenance Intake Manifold Boost Pressure Imbalance QSM QS QSK9 QSK QST QSK QSK QSK8 Engine Coolant Level Sensor Circuit - data incorrect Fuel Timing Pressure or Timing Actuator Stuck SAE J99 datalink - cannot transmit SAE J99 datalink - cannot transmit SAE J99 datalink - cannot transmit SAE J99 not fast enough Water in Fuel Sensor Circuit - shorted high (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

13 9 * * 8* 9 P9 S P9 S P9 P S P P8 P8 P8 P8 S S P N/A N/A N/A 9 Water in Fuel Sensor Circuit - shorted low Accelerator Pedal Idle Validation Circuit - data incorrect QSM QS QSK9 QSK QST QSK QSK QSK8 Accelerator Pedal Idle Validation Circuit - data incorrect Accelerator Pedal Idle Validation Circuit - out of calibration Accelerator Pedal Idle Validation Circuit - out of calibration Intake Manifold Pressure Sensor Circuit - data incorrect Power Lost without Ignition Off Engine Oil Pressure Sensor Circuit - data incorrect Battery # Voltage Low - Warning Battery # Voltage Low - Warning Battery # Voltage High - Warning Battery # Voltage High Warning Accelerator Pedal Position Sensor Supply Voltage Circuit - shorted low OEM Sensor Supply Voltage Low - Warning GSP Communication Failure RPC Number Not Supported RPC Argument Mismatch Fuel Pressure High - Warning (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

14 8 Maint. Maint. 9* P P P P S8 S S S8 P98 P P P9 P9 P9 P9 P9 S Injector Metering Rail # Pressure Sensor Circuit - shorted high QSM QS QSK9 QSK QST QSK QSK QSK8 Injector Metering Rail # Pressure Sensor Circuit - shorted high Injector Metering Rail # Pressure Sensor Circuit - shorted low Injector Metering Rail # Pressure Sensor Circuit - shorted low Fuel Control Valve Circuit - shorted high Turbocharger # Wastegate Control Circuit - shorted low Timing Rail Actuator Circuit - data incorrect Fuel Rail Actuator Circuit - data incorrect Engine Oil Level Low Maintenance Engine Oil Level # Low Maintenance Engine Oil Level # Low Warning Exhaust Port Temperature Bank Imbalance Fuel Pressure Low - Warning Injector Metering Rail # Pressure Sensor Circuit - shorted high Injector Metering Rail # Pressure Sensor Circuit - shorted low Injector Metering Rail # Pressure High - Warning Injector Metering Rail # Pressure Low - Warning Start Assist Device - Canister Empty (Ether Injection) (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

15 P P9 P9 S8 S S S8 P9 P9 S P P S P9 S S8 P9 P Intake Manifold Temperature High Warningl Transmission Output Shaft (Tailshaft) Speed Low Warning QSM QS QSK9 QSK QST QSK QSK QSK8 Transmission Output Shaft (Aux Gov) Speed Low Warning Fuel Pump Calibration Trim Circuit Error Engine Speed/Position Sensor # (Camshaft) Supply Voltage Multiple Unit Synchronization Switch Circuit - data incorrect Fuel Control Valve - mechanically stuck Accelerator Pedal Frequency Position Sensor Supply Circuit - shorted high Accelerator Pedal Frequency Position Sensor Supply Circuit - shorted low Fuel Metering Solenoid - bad device OEM Alternate Droop Switch Validation - data incorrect Auxiliary Input/Output # Circuit - shorted high Auxiliary Input/Output # Circuit - shorted high OEM Alternate torque validation switch - data incorrect Auxiliary Input/Output # Circuit - shorted high Injector Control Valve Electronic Filter (Transorb) Error Fuel Delivery Pressure Sensor Circuit - shorted high Fuel Delivery Pressure Sensor Circuitshorted low (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

16 * S P9 P P P P P P P P P P P P S S S Accelerator Pedal Idle Validation Circuit - shorted low QSM QS QSK9 QSK QST QSK QSK QSK8 Accelerator Pedal Idle Validation Circuit - shorted low Injector Metering Rail # Pressure High - warning level Injector Metering Rail # Pressure High - warning level Fuel Pressure Sensor Error Engine Blowby - Warning Level Engine Blowby - Warning Level Fuel Supply Pump Inlet Pressure Sensor Circuit - shorted high Fuel Supply Pump Inlet Pressure Sensor Circuit shorted low Fuel Supply Pump Inlet Pressure Low - warning level Turbocharger # Speed High - warning level Electrical Charging System Voltage High - warning level Electrical Charging System Voltage Low - Warning Level Electrical Charging System Voltage Low - Critical Level OEM Commanded Dual Output Shutdown Engine Hot Shutdown Engine Hot Shutdown High Lubricating Oil Filter Restriction (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

17 * * * * * * * * * 8* * () () High Turbo Compressor Inlet Temp RB High Turbo Compressor Inlet Temp LB Low # LB Cylinder Power Low # LB Cylinder Power Low # LB Cylinder Power Low # LB Cylinder Power Low # LB Cylinder Power Low # LB Cylinder Power Low # LB Cylinder Power Low #8 LB Cylinder Power Low # RB Cylinder Power QSM QS QSK9 QSK QST QSK QSK QSK8 8 * * 9 () () Low # RB Cylinder Power Low # RB Cylinder Power 8 * * 9 () () Low # RB Cylinder Power Low # RB Cylinder Power 8 (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

18 * * 9 () 8 () Low # RB Cylinder Power Low # RB Cylinder Power QSM QS QSK9 QSK QST QSK QSK QSK8 8 * * 9 () 9 () Low # RB Cylinder Power Low # RB Cylinder Power 8 * * 9 8 () () Low # RB Cylinder Power Low # RB Cylinder Power 8 * * 8* * * * * * * Low # RB Cylinder Power Low # RB Cylinder Power Low #8 RB Cylinder Power High # LB Cylinder Exhaust Temperature High # LB Cylinder Exhaust Temperature High # LB Cylinder Exhaust Temperature High # LB Cylinder Exhaust Temperature High # LB Cylinder Exhaust Temperature High # LB Cylinder Exhaust Temperature (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only 8

19 * 8* 9 * S 8 (,) () High # LB Cylinder Exhaust Temperature High #8 LB Cylinder Exhaust Temperature Change Lubricating Oil and Filter High # RB Cylinder Exhaust Temperature QSM QS QSK9 QSK QST QSK QSK QSK8 * (,) () High # RB Cylinder Exhaust Temperature * (,) () High # RB Cylinder Exhaust Temperature * (,) 8 () High # RB Cylinder Exhaust Temperature * (,) 9 () High # RB Cylinder Exhaust Temperature * 8 (,) 9 () High # RB Cylinder Exhaust Temperature * 8* 9* High # RB Cylinder Exhaust Temperature High #8 RB Cylinder Exhaust Temperature Change fuel filter (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only 9

20 * * * * * * * * * * * * * 8* 9* * * * High # LB Cylinder Power High # LB Cylinder Power High # LB Cylinder Power High # LB Cylinder Power High # LB Cylinder Power High # LB Cylinder Power High # LB Cylinder Power High # LB Cylinder Power High # LB Cylinder Power High # LB Cylinder Power High # LB Cylinder Power High # LB Cylinder Power High # LB Cylinder Power High #8 LB Cylinder Power Change coolant filter QSM QS QSK9 QSK QST QSK QSK QSK8 Cyl # LB Exhaust Temp Sens Failed Low Cyl # LB Exhaust Temp Sens Failed Low Cyl # LB Exhaust Temp Sens Failed Low (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

21 * * * * 8* 9* 9* 9* 9* 9* * () ( Cyl # LB Exhaust Temp Sens Failed Low Cyl # LB Exhaust Temp Sens Failed Low Cyl # LB Exhaust Temp Sens Failed Low Cyl # LB Exhaust Temp Sens Failed Low Cyl #8 LB Exhaust Temp Sens Failed Low Change Coolant LBF Turbo Comp Inlet Temp Sens Failed High LBR Turbo Comp Inlet Temp Sens Failed Low QSM QS QSK9 QSK QST QSK QSK QSK8 RBF Turbo Comp Inlet Temp Sens Failed High RBR Turbo Comp Inlet Temp Sens Failed Low High # RB Cylinder Power * * 9 () () High # RB Cylinder Power High # RB Cylinder Power * * () () High # RB Cylinder Power High # RB Cylinder Power (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

22 * * () 8 () High # RB Cylinder Power High # RB Cylinder Power QSM QS QSK9 QSK QST QSK QSK QSK8 * * () 8 () High # RB Cylinder Power High # RB Cylinder Power * * 8 () 9 () High # RB Cylinder Power High # RB Cylinder Power * * 8* 9 * P (,) () High # RB Cylinder Power High # RB Cylinder Power High #8 RB Cylinder Power Crankcase Blowby Pressure Sensor Circuit - shorted high Cyl # RB Exhaust Temp Sens Failed Low * (,) () Cyl # RB Exhaust Temp Sens Failed Low (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

23 * (,) () Cyl # RB Exhaust Temp Sens Failed Low QSM QS QSK9 QSK QST QSK QSK QSK8 * (,) 8 () Cyl # RB Exhaust Temp Sens Failed Low * (,) 9 () Cyl # RB Exhaust Temp Sens Failed Low * 8 (,) () Cyl # RB Exhaust Temp Sens Failed Low * 8* 9 * 8* 9* * P S P Cyl # RB Exhaust Temp Sens Failed Low Cyl #8 RB Exhaust Temp Sens Failed Low Crankcase Blowby Pressure Sensor Circuit - shorted low Trend Data Memory Nearly Full Trend Data Memory Full Fault Log Snapshot Data Nearly Full Engine Speed/Position # - Cam sync error Fault Log Snapshot Data Full Injector Metering Rail # Pressure Malfunction (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

24 * * 8 8 P9 S9 P Change Lubricating Oil Filters QSM QS QSK9 QSK QST QSK QSK QSK8 Catastrophic Power Loss - ECM Data Lost Injector Metering Rail # Pressure Malfunction Output Device Driver (VGT or Transmission shift PWM signal) Turbocharger # Turbine Inlet Temperature High - warning level 9 S Auxiliary Equipment Sensor Input # (OEM Switch) 8 9 * * * * * 8* 9* * * * P 8 8 Rapid Rise in Intake Manifold Temperature LBF Cylinder Power Imbalance between cylinders Vehicle Controller initiated fault log High #9 LB Cylinder Exhaust Temperature High #9 RB Cylinder Exhaust Temperature Exhaust Gas Temperature Sensor Circuit Failed Low Cyl # 9 RB Exhaust Gas Temperature Sensor Circuit Failed Low Cyl # 9 LB High Power Cylinder # 9 Left Bank High Power Cylinder # 9 Right Bank Low Power Cylinder # 9 Left Bank Low Power Cylinder # 9 Right Bank Post-Filter Oil Pressure Sensor Circuit- Shorted high (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

25 * * 8* 9* 9* 9* * * * * * * * 8* P S 8 Post-Filter Oil Pressure Sensor Circuit- Shorted Low Rapid Rise in Intake Manifold Temperature LBR Rapid Rise in Intake Manifold Temperature RBF Rapid Rise in Intake Manifold Temperature RBR Auxiliary Equipment Sensor Input # (OEM Pressure Sensor) Engine Protection Warning Auxiliary Equipment Sensor Input # (OEM Switch) Engine Protection - Critical Left Bank Middle High Intake Manifold Temperature - EP Left Bank Middle Intake Manifold Temp Sensor Circuit Failed High Left Bank Middle Intake Manifold Temp Sensor Circuit Failed Low Rapid Rise in Intake Manifold Temperature LBM Right Bank Middle High Intake Manifold Temperature - EP Right Bank Middle Intake Manifold Temp Sensor Circuit Failed High Right Bank Middle Intake Manifold Temp Sensor Circuit Failed Low Rapid Rise in Intake Manifold Temperature RBM * Front Intercooler Boost Pressure High * Front Intercooler Boost Pressure Low * Front Intercooler Boost Pressure Out of Range High * Front Intercooler Boost Pressure Out of Range Low * Rear Intercooler Boost Pressure High * Rear Intercooler Boost Pressure Low * Rear Intercooler Boost Pressure Out of Range High 8* Rear Intercooler Boost Pressure Out of Range Low QSM QS QSK9 QSK QST QSK QSK QSK8 (**) HHP QSK//8 Fault Severity Levels: Level : Stop Engine Now Level : Repair at Next PM Level : Repair Engine Same Day Level : Information Only

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