Diagnostics
Komatsu Dump Truck Fault Codes List & Code Lookup
Look up 1,115 Komatsu Dump Truck fault codes and error codes, in plain English. 1 of them have a full guide covering what the code means, what triggers it, the most common causes, and the first things to check before you call the dealer.
Komatsu Dump Truck fault code guides
Full Komatsu Dump Truck fault code list
None of these map to a J1939 SPN or FMI, so they read only on Komatsu Dump Truck tooling. Every listed code is below, in code order, 100 to a page.
Codes on file
1,115
Readable as J1939 SPN/FMI
0
Komatsu Dump Truck-specific
1,115
- 1380MWLock-up Clutch: Slipping (MW)
- 1500L0Double Engagement (Transmission Controller System)
- 15B0NXTransmission Oil Filter: Clogged (Transmission Controller System)
- 15BONXTransmission Oil Filter: Clogged (NX)
- 15F0KMR - F Shifting Abuse 1: Operational Error Or Incorrect Setting (Transmission Controller System)
- 15F0MBR - F Shifting Abuse 2: Operational Error Or Incorrect Setting (Transmission Controller System)
- 15F7KMTransmission Forward Clutch Disc Abuse (Transmission Controller System)
- 15FL1Trouble in 2nd Clutch Pressure Control Valve I
- 15FOKMR to F Shifting Abuse 1: Operator Error
- 15FOMBR→ F Shifting Abuse 2
- 15G0MWR Clutch: Slipping (R Command Holding Pressure, R Clutch Fill Switch ON, Slipping Detected) (Transmission Controller System)
- 15G7KMTransmission Reverse Clutch Disc Abuse (Transmission Controller System)
- 15H0MWHi Clutch: Slipping (Hi Command Holding Pressure, Hi Clutch Fill Switch ON, Slipping Detected) (Transmission Controller System)
- 15HOMWTrouble in Hi Clutch System (Slip)
- 15J0MWLo Clutch: Slipping (Lo Command Holding Pressure, Lo Clutch Fill Switch ON, Slipping Detected) (Transmission Controller System)
- 15JOMWTrouble in Lo Clutch System (Slip)
- 15K0MW1st Clutch: Slipping (1st Command Holding Pressure, 1st Clutch Fill Switch ON, Slipping Detected) (Transmission Controller System)
- 15KOMWTrouble in 1st Clutch System
- 15L0MW2nd Clutch: Slipping (2nd Command Holding Pressure, 2nd Clutch Fill Switch ON, Slipping Detected) (Transmission Controller System)
- 15LOMWTrouble in 2nd Clutch System
- 15M0MW3rd Clutch: Slipping (3rd Command Holding Pressure, 3rd Clutch Fill Switch ON, Slipping Detected) (Transmission Controller System)
- 15MOMWTrouble in 3rd Clutch System
- 15N0MW4th Clutch: Slipping (4th Command Holding Pressure, 4th Clutch Fill Switch ON, Slipping Detected)
- 15SBL1R Clutch Solenoid: Fill Signal Is ON When Command Current Is OFF. (Transmission Controller System)
- 15SBMAR Clutch Solenoid: Malfunction (R Command Holding Pressure, R Clutch Fill Switch OFF, Slipping Detected) (Transmission Controller System)
- 15SCL1Hi Clutch Solenoid: Fill Signal Is ON When Command Signal Is OFF. (Transmission Controller System)
- 15SCMAHi Clutch Solenoid: Malfunction (Hi Command Holding Pressure, Hi Clutch Fill Switch OFF, Slipping Detected) (Transmission Controller System)
- 15SDL1Lo Clutch Solenoid: Fill Signal Is ON When Command Current Is OFF. (Transmission Controller System)
- 15SDMALo Clutch Solenoid: Malfunction (Lo Command Holding Pressure, Lo Clutch Fill Switch OFF, Slipping Detected) (Transmission Controller System)
- 15SEL11st Clutch Solenoid: Fill Signal Is ON When Command Current Is OFF (Transmission Controller System)
- 15SEMA1st Clutch Solenoid: Malfunction (1st Command Holding Pressure, 1st Clutch Fill Switch OFF, Slipping Detected) (Transmission Controller System)
- 15SFL12nd Clutch Solenoid: Fill Signal Is ON When Command Current Is OFF. (Transmission Controller System)
- 15SFMA2nd Clutch Solenoid: Malfunction (2nd Command Holding Pressure, 2nd Clutch Fill Switch OFF, Slipping Detected) (Transmission Controller System)
- 15SGL13rd Clutch Solenoid: Fill Signal Is ON When Command Current Is OFF. (Transmission Controller System)
- 15SGMA3rd Clutch Solenoid: Malfunction (3rd Command Holding Pressure, 3rd Clutch Fill Switch OFF, Slipping Detected) (Transmission Controller System)
- 15SHL14th Clutch Solenoid: Command Current is OFF and Fill Signal is ON.
- 15SHMA4th Clutch Solenoid: Malfunction (4th Command is Holding Pressure, 4th Clutch Fill Switch is OFF, and Slipping Detected)
- 15SJL1ECMV for Lock-up Clutch: * See Contents (L1)
- 15SJMALockup Clutch Solenoid: Malfunction (Lockup Command Holding Pressure, Lockup Clutch Fill Switch OFF, Slipping Detected) (Transmission Controller System)
- 15SJMWMalfunction of ECMV (Lockup)
- 15SKL1ECMV for Inter-Axle Differential Lock Clutch: * See Contents (L1)
- 15SKMAInter-Axle Differential Lockup Pressure Control Valve: Malfunction (Failure Of Pressure Control Valve) (Transmission Controller System)
- 15SSL1Mid Clutch ECMV: Fill Signal ON, Command Current OFF
- 15SSMAMid Clutch ECMV: Malfunction
- 15X0MWMid Clutch: Slipping
- 15XOMWMid Clutch: Slipping
- 2A26L1Trouble in Front Wheel Differential Lock Pressure Control Valve 2
- 2A62L1Trouble In Front Wheel Differential Lock Pressure Control Valve 2 (Retarder Controller System)
- 2A62LHTrouble In Front Wheel Differential Lock Pressure Control Valve 1 (Retarder Controller System)
- 2B61MWInter-Axle Differential Lock Clutch: Slipping (MW)
- 2B62L1Trouble In Rear Wheel Differential Lock Pressure Control Valve 2 (Retarder Controller System)
- 2B62LHTrouble In Rear Wheel Differential Lock Pressure Control Valve 2 (Retarder Controller System)
- 2B662L1Trouble in Rear Wheel Differential Lock Pressure Control Valve 2
- 2C4MNXClogging Of retarder Cooling Oil Filter (Machine Monitor System)
- 2D01CAFront Brake (right): Wear (CA)
- 2D02CAFront Brake (left): Wear (CA)
- 2D03CACenter Brake (right): Wear (CA)
- 2D04CACenter Brake (left): Wear (CA)
- 2D05CARear Brake (right): Wear (CA)
- 2D06CARear Brake (left): Wear (CA)
- 2F00KMParking Brake: Error In Operation Or Setting (Dragging Of Parking Brake) (Retarder Controller System)
- 2G39MABrake Vale: Malfunction
- 2G3AMABrake Relay Valve: Malfunction
- 2G41ZGAccumulator: Low oil pressure
- 2G42ZGLowering Of Accumulator Oil Pressure (Front) (Retarder Controller System)
- 2G43ZGLowering Of Accumulator Oil Pressure (Rear) (Retarder Controller System)
- 2J00MAAutomatic Emergency Valve: Erratic Behavior
- 4A00ZGSteering System: Low Oil Pressure
- 4A5WZHSteering Accumulator 1: Low Oil Pressure
- 4A5XZHSteering Accumulator 2: Low Oil Pressure
- 6014NXHydraulic Tank Filter: Clogged (NX)
- 879AKAA/C Inner Sensor Open Circuit
- 879AKBA/C Inner Sensor Short Circuit
- 879BKAA/C Outer Sensor Open Circuit
- 879BKBA/C Outer Sensor Short Circuit
- 879CKAVentilating Sensor Open Circuit
- 879CKBVentilating Sensor Short Circuit
- 879EMCVentilation Damper Abnormality
- 879FMCAir Mix Damper Abnormality
- 879GKXRefrigerant Abnormality
- 989A00Engine Over Run Prevention Signal: Operating (Transmission Controller System)
- 989AKZEngine Overrun Prevention Command Signal: Open or Short Circuit (KZ)
- 989D00Rear Section Tipping Over Alarm: Alarm Is Activated. (Lift Operation When Machine Is Inclined) (Machine Monitor System)
- 989L00Engine Controller Lock Caution1
- 989M00Engine Controller Lock Caution2
- 989N00Engine Controller Lock Caution 3
- 989X00Overspeed Alarm: Alarm Operation
- 989Y00Overload Alarm: Speed Limit Function Operation
- 989Z00Parking Brake Interlock Caution
- A000N1Engine: Over Speed (N1)
- A001Left Front Suspension Pressure Sensor Signal Is High
- A002Left Front Suspension Pressure Sensor Signal Is Low
- A003Right Front Suspension Pressure Sensor Signal Is High
- A004Right Front Suspension Pressure Sensor Signal Is Low
- A005Left Rear Suspension Pressure Sensor Signal Is High
- A006Left Rear Suspension Pressure Sensor Signal Is Low
- A007Right Rear Suspension Pressure Sensor Signal Is High
- A008Right Rear Suspension Pressure Sensor Signal Is Low
- A009Incline Sensor Signal Is High
- A010Incline Sensor Signal Is Low
Other Komatsu machine types
Fault code lists by brand
- CAT8,255 codes
- Volvo6,446 codes
- New Holland Tractor3,475 codes
- FPT3,033 codes
- Case IH2,992 codes
- Bobcat2,653 codes
- Challenger Tractor2,434 codes
- New Holland Combine2,274 codes
- John Deere Tractors1,884 codes
- Case Wheel Loader1,860 codes
- John Deere Engines1,853 codes
- Cummins1,847 codes
- Challenger Rubber Track Tractor1,747 codes
- Volvo Wheel Loader1,726 codes
Safety-critical: confirm before use
Safety first: park on level ground, stop the engine, and secure the machine before any inspection. Thresholds, component locations, wire numbers, fuse locations, and reset procedures can vary by model, configuration, and serial number. Confirm them in the service documentation for your exact machine.