Meaning of fault codes for Komatsu excavator

Many friends who have bought excavators may not understand the fault codes that appear on the control panel after the car has problems during use, so they do not know how to start repairing it. Some problems may be solved by themselves, but they can only be reported for repair. Below is Shanghai Huachengwww.shcteng.comIntroduce the meanings represented by the fault codes of several mainstream Komatsu models.

Komatsu PC200-6/PC300-6/PC400-6/PC200-7Fault code, user code (automatically displayed when there is a fault) code: also applicable to most Komatsu excavator models

E01. Automatic mode system in HYPER system.
E02, PC-EPC system. E03. Rotary parking brake system.
E04+CELL, the center position system of the joystick in the HYPER system.
E05. Governor motor system.
The EPC solenoid valve drive system in E06+CALL and HYPER systems.
E09. HYPER-GX system shutdown. CALL, HYPER joystick, and EPC solenoid valve drive system.
E101. Abnormal fault history record.
E102. Clock data abnormality.
E103. The buzzer output is short circuited, and the buzzer driver harness is in contact with the 24V power line.
E104. The air filter is clogged. E108. The water temperature is above 105 ℃.
E112. Wiper motor drive forward system short circuit (new model).
E113. Wiper motor drive reverse system short circuit (new model).
E114. Spray washer drive circuit short circuit (new model).
E202, LS select solenoid valve circuit short circuit.
E203. The circuit of the rotary parking brake solenoid valve is short circuited.
E204. The circuit of the pump merging/diverging solenoid valve is short circuited.
E205, there is a short circuit in the circuit of the secondary overflow solenoid valve.
E206, Short circuit in the circuit of the walking speed conversion solenoid valve.
E207, Quick mode solenoid valve circuit short circuit.
E208, Quick mode solenoid valve circuit open circuit.
E213. The circuit of the rotary parking brake solenoid valve is open circuit.
E214. The circuit of the pump merging/splitting solenoid valve is open circuit.
E215. The circuit of the secondary overflow solenoid valve is open circuited.
E216. The circuit of the walking speed conversion solenoid valve is short circuited.
E217, Mode selection input fault.
E218, Network response timeout fault.
E222, LS-EPC solenoid valve circuit short circuit.
E223, LS-EPC solenoid valve circuit open circuit.
E224. The front pump pressure sensor circuit is abnormal.
E225. The circuit of the rear pump pressure sensor is abnormal.
E226. The power supply of the pressure sensor circuit is abnormal.
E227. Engine speed sensor is abnormal.
E231. Activation mode (rotation) solenoid valve circuit short circuit.
E232, Front pump TVC solenoid valve circuit short circuit (old model).
E233, Front pump TVC solenoid valve circuit open circuit (old model).
E225. The circuit of the rear pump pressure sensor is abnormal.
E226. The power supply of the pressure sensor circuit is abnormal.
E227. Engine speed sensor is abnormal.
E231. Activation mode (rotation) solenoid valve circuit short circuit.
E232, Front pump TVC solenoid valve circuit short circuit (old model).
E233, Front pump TVC solenoid valve circuit open circuit (old model).
E235, Activation mode (rotation) solenoid valve circuit open circuit.
E236. The TVC solenoid valve circuit of the rear pump is short circuited.
E237, Rear pump TVC solenoid valve circuit open circuit.
E302. The circuit of the rotary stroke control solenoid valve is short circuited.
E303, Rotary stroke control solenoid valve circuit open circuit.
E306, feedback potential circuit abnormality.
E308, Abnormal fuel dial input.
E313, Automatic Fat Supply Controller Failure (optional).
E315. The output circuit of the battery relay is short circuited.
E316. Governor motor malfunction.
E317. Governor motor circuit open circuit.
E318. Governor motor circuit short circuit.

Komatsu PC200-8Fault code:

The PC200-8 adopts an electronic fuel injection engine, and its user code is significantly different from the PC200-6/7.

PC200-8 User Code:

E02, PC-EPC system.
E03. Rotary parking brake system.
E10. Engine controller power failure, engine control drive system circuit failure, this engine stops running.
E11. Engine control system malfunction (reducing output power to protect the engine).
E14. Abnormal feedback system.
E15. Engine sensors (water temperature, fuel pressure, oil pressure) malfunction.
EOE, network malfunction.
Fault code:
989L00, engine controller lock warning (mode 1).
989M00, engine controller lock warning (mode 2).
989N00, engine controller lock warning (mode 3).
AA10NX, air filter clogged.
AB00KE, charging voltage too low.
B @ BAZG, low oil pressure.
B @ BAZK, the oil level is too low.
B @ BCNS, engine coolant overheating.
B @ BCZK, the coolant level is too low.
B @ HANS, hydraulic oil overheating.
CA111, internal malfunction of engine controller.
CA115, engine speed sensor and backup speed sensor malfunction.
CA122, high feedback voltage fault of intake pressure sensor.
CA123, low feedback voltage fault of intake pressure sensor.
CA131, throttle plate sensor feedback voltage high fault.
CA132, throttle plate sensor feedback voltage low fault.
CA144, coolant temperature sensor feedback voltage too high fault.
CA145, coolant temperature sensor feedback voltage too low fault.
CA153, high feedback voltage fault of intake temperature sensor.
Know theseKomatsu excavatorAfter understanding the meaning of the fault code, it can be solved according to the situation, and even if it is pulled for repair, it will not be fooled by the repairman.