Komatsu Error Codes list

By | 23/10/2018

Komatsu Error Codes list

See also: Komatsu Service Repair Manuals PDF

Komatsu WA500

Komatsu WA500

Komatsu Fault Codes

E02 PC – EPC system;
E03, parking brake system;
E10, engine controller power failure, engine management system malfunction
E11, engine control failure (reduction of output power to protect the engine);
E14 – failure of the feedback system;
E15, engine sensor malfunction (temperature, fuel pressure, oil pressure);


EOE network failure.
989L00 Error code: engine controller lockout warning (mode 1).
989M00, motor controller for blocking the warning (mode 2).
989N00, motor controller for blocking the warning (mode 3).
AA10NX Clogged air filter.
AB00KE Charging voltage too low or missing.
B @ BAZG, low oil pressure.
B @ BAZK, the oil level is too low.
B @ BCNS, engine coolant overheating.
B @ BCZK coolant level too low.
B @ HANS, hydraulic oil from overheating.
CA111, internal engine controller malfunction.
CA115, engine crankshaft speed sensor and speed sensor malfunction.
CA122, the feedback voltage of the intake air pressure sensor is too high.
CA123, intake air pressure sensor feedback voltage is too low.
CA131, throttle sensor feedback sensor failure.
CA132, Throttle Sensor Feedback Pressure and Low Failure.
CA144, coolant temperature high temperature sensor feedback fault 145, coolant temperature sensor feedback voltage too low or short circuit;
CA153, intake air temperature sensor feedback voltage is too high;
CA154, intake air temperature sensor feedback voltage is too low;
CA155, intake air temperature too high (excess);
CA187, sensor supply voltage is too high;
CA221, the ambient pressure sensor feedback voltage is too high;
CA222, the ambient pressure sensor feedback voltage is too low;
CA227, sensor supply voltage is too high;
CA234, engine speeding;
CA238, supply voltage from speed sensor failure;
CA271, IMV / PCV1 short circuit;
CA272, IMV / PCV1;
CA322, injector open circuit, short circuit;
CA323, injector, open circuit, short circuit failure;
CA324, injector, open circuit, short circuit;
CA325, injector, open circuit, short circuit; CA435, engine oil pressure switch failure;
CA331, nozzle open circuit, short circuit fault;
CA332, injector, open circuit, short circuit fault;
CA342, correction code is incorrect;
CA351, drive circuit failure;
CA352, sensor supply voltage too low;
CA386, sensor supply voltage too high;
CA428, the feedback voltage of the fuel moisture sensor is too high;
CA429, the feedback voltage of the fuel moisture sensor is too low;
CA441, battery voltage too low;
CA442, battery voltage too high;
CA449, the total pressure in the reservoir is too high;
CA451, the common rail pressure sensor feedback value is too large;
CA452, Common Rail Pressure Sensor Feedback is too low;
CA488, intake air temperature too high (reduced torque);
CA553, the total pressure in the manifold is too high;
CA559, the total pressure in the manifold is too low;
CA689, engine crankshaft speed sensor malfunction;
CA731, engine speed sensor signal phase failure;
CA757, all data lost;
CA778, spare engine sensor failure;
CA633, data transfer to suspend failure;
CA2185, the power supply voltage of the throttle valve is too high;
CA2186, Throttle Power Voltage Too Low;
CA2249, the total manifold pressure is too low;
CA2311, IMV, solenoid failure;
CA2555, preheat suction too high voltage;
CA2556, pre-open the low voltage fault in the input;
D19JKZ Elimination of code personalization;
D862KA GPS Antenna Diagram;

DA22KK Pump solenoid supply voltage too low;
DA25KP sensor supply failure 5V;
DA29KQ, selection of abnormal mode;
DA2RMC, CAN open (display);
DGH2KB, hydraulic oil temperature sensor short circuit;
DHPAMA, before the pump pressure sensor is abnormal;
DHPBMA, after the pump pressure sensor is abnormal;
DHS3MA Stick to restore an abnormal pressure sensor PPC;
DHS4MA bucket used in an abnormal pressure sensor PPC;
The DHS8MA boom amplifies the abnormal pressure sensor PPC;
DHSAMA, turn right, the PPC pressure sensor is abnormal;
DHSBMA, abnormal left turn of the pressure sensor PPC;
DHSDMA for opening an abnormal pressure sensor PPC;
DHX1MA, abnormal load sensor;
DW43KA, running high-voltage circuit of the electromagnetic valve of the converter;
DW43KB, short and low solenoid solenoid valve short circuit;
DW45KA Rotation to maintain an open solenoid circuit;
DW45KB Turn to ensure a short circuit of the solenoid valve;
DW91KA, two overflow solenoid valve circuits;
DW91KB – convergence of the short circuit of the electromagnetic valve;
DWA2KA, spare solenoid valve circuit;
DWA2KB, short circuit of the spare solenoid valve;
DWK0KA, two overflow solenoid valve circuits;
DWK0KB, two short-circuit overflow solenoid valve;
DXA8KA former pump PC-EPC solenoid valve;
DXA8KB former pump PC-EPC short circuit of the solenoid valve;


DXA9KA, after the PC-EPC solenoid valve circuit;
DXA9KB, after a short circuit of the PC-EPC pump solenoid valve;
DXE0KA, LS-EPC solenoid valve circuit;
DXE0KB, LS-EPC solenoid valve short circuit;
DXE4KA, EPC safety switch;
DXE4KB EPC Fault Short;
DXE5KA Pump starts / shunts an open circuit of the main solenoid valve;
DXE5KB merging or disabling the main short circuit of the solenoid valve;
DXE6KA low voltage release / shunt of the LS solenoid valve;
DXE6KB fusion / shunting LS short circuit of the solenoid valve;
DY20KA is not working properly. , Exclusion of parking DY20MA;
DY2CKA Engine engine;
DY2CKB motor shorting washers.

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KOMATSU FAULT CODES LIST