Fault code [989L00] Engine controller lock warning 1
Fault code [989M00] Engine controller lock warning 2
Fault code [989N00] Engine controller lock warning 3
Fault code [AA10NX] Air filter clogged
Fault code [AB00KE] Charging voltage is low
Fault code [B@BAZG] Low oil pressure
Fault code [B@BAZK] Engine oil level is low
Fault code [B@BCNS] Engine cooling water is overheated
Fault code [B@BCZK] Engine cooling water level is low
Fault code [B@HANS] Hydraulic oil overheating
Fault code [CA111] EMC critical internal fault
Fault code [CA115] Engine Ne and Bkup speed sensor failure
Fault code [CA122] High pressure fault of inflation pressure sensor
Fault code [CA123] Inflation pressure sensor low pressure fault
Fault code [CA131] Throttle sensor high voltage fault
Fault code [CA132] Throttle sensor low voltage fault
Fault code [CA144] Coolant temperature sensor high voltage fault
Fault code [CA145] Coolant temperature sensor low pressure fault
Fault code [CA153] Charging temperature sensor high pressure fault
Fault code [CA154] Charging temperature sensor low pressure fault
Fault code [CA155] The charging temperature drops rapidly
Fault code [CA187] Sensor power supply 2 low voltage fault
Fault code [CA221] Environmental pressure sensor high pressure fault
Fault code [CA222] Environmental pressure sensor low pressure fault
Fault code [CA227] Sensor power supply 2 high voltage fault
Fault code [CA234] Engine over speed
Fault code [CA238] Ne speed sensor power supply voltage failure
Fault code [CA271] IMV/PCV1 short circuit fault
Fault code [CA272] IMV/PCV1 open circuit fault
Fault code [CA322] Injector #1 (L#1) open circuit/short circuit fault
Fault code [CA323] Injector #5 (L#5) open circuit/short circuit fault
Fault code [CA324] Injector #3 (L#3) open circuit/short circuit fault
Fault code [CA325] Injector #6 (L#6) open circuit/short circuit fault
Fault code [CA325] Injector #2 (L#2) open circuit/short circuit fault
Fault code [CA325] Injector #4 (L#4) open circuit/short circuit fault
Troubleshooting with fault codes (display codes), Part 2
Fault code [CA342] Calibration code is incompatible
Fault code [CA351] Fuel injector drive circuit fault
Fault code [CA352] Sensor power supply 1 low voltage fault
Fault code [CA386] Sensor power supply 1 voltage high fault
Fault code [CA428] Fuel water sensor high voltage fault
Fault code [CA429] Fuel water sensor low voltage fault
Fault code [CA435] Oil pressure switch failure
Fault code [CA441] battery low voltage fault
Fault code [CA442] High battery voltage fault
Fault code [CA449] Extremely high oil tank pressure fault
Fault code [CA451] Oil tank pressure sensor high voltage fault
Fault code [CA452] Oil tank pressure sensor low voltage fault
Fault code [CA488] The charging temperature is high and the torque is reduced.
Fault code [CA553] High oil tank pressure fault
Fault code [CA559] low oil tank pressure fault
Fault code [CA689] Engine Ne speed sensor failure
Fault code [CA731] Engine Bkup speed sensor phase failure
Fault code [CA757] All continuous data loss fault
Fault code [CA778] Engine Bkup speed sensor failure
Fault code [CA1633] KOMNET data link timeout fault
Fault code [CA2185] Throttle sensor power supply voltage high fault
Fault code [CA2186] Throttle sensor power supply voltage low fault
Fault code [CA2249] Oil tank pressure extremely low fault
Fault code [CA2311] IMV solenoid coil failure
Fault code [CA2555] Grill heater relay high voltage fault
Fault code [CA2556] Grill heater relay low voltage fault
Fault code [D19JKZ] Personnel code relay abnormality
Fault code [D862KA] GPS antenna is broken.
Fault code [DA22KK] Pump solenoid coil power supply voltage is low.
Fault code [DA25KP] 5V sensor 1 power supply voltage abnormality
Fault code [DA29KQ] Abnormal model selection
Diagnose faults based on fault codes (code display)
Fault code [DA2RMC] CAN open circuit (pump controller detects
Fault code [DAFGMC] GPS module fault
Fault code [DAFRMC] CAN open circuit (pump controller detection)
Fault code [DGH2KB] Hydraulic oil temperature sensor short circuit
Fault code [DHPAMA]F Pump pressure sensor abnormality
Fault code [DHPBMA]R Pump pressure sensor abnormality
Fault code [DHS3MA] The stick is retracted and the PPC pressure sensor is abnormal.
Fault code [DHS4MA] Bucket excavation PPC pressure sensor abnormality
Fault code [DHS8MA] Boom lifting PPC pressure sensor abnormality
Fault code [DHSAMA] Right rotation PPC pressure sensor abnormality
Fault code [DHMA] Left rotation PPC pressure sensor abnormality
Fault code [DHSDMA] Bucket unloading PPC pressure sensor abnormality
Fault code [DHX1MA] Overload sensor abnormality (simulation)
Fault code [DW43KA] Travel speed solenoid coil is open circuit
Fault code [DW43KB] Travel speed solenoid coil short circuit
Fault code [DW45KA] Swing brake solenoid coil is open circuit
Fault code [DW45KB] Swing brake solenoid coil short circuit
Fault code [DW91KA] Walking connected electromagnetic coil is open circuit
Fault code [DW91KB] Walking connection electromagnetic coil short circuit
Fault code [DWA2KA] Backup solenoid coil is open circuit
Fault code [DWA2KB] Backup solenoid coil short circuit
Fault code [DWK0KA] Level 2 overflow solenoid coil is open circuit
Fault code [DWK0KB] Level 2 overflow solenoid coil short circuit
Diagnose faults based on fault codes (code display)
Fault code [DXA8KA] PC-EPC (F) electromagnetic coil system open circuit
Fault code [DXA8KB] PC-EPC (F) electromagnetic coil system open circuit
Fault code [DXA9KA] PC-EPC (R) electromagnetic coil system open circuit
Fault code [DXA9KB] PC-EPC(R) electromagnetic coil system short circuit
Fault code [DXE0KA] LS-EPC solenoid system open circuit
Fault code [DXE0KB] LS-EPC solenoid coil short circuit
Fault code [DXE4KA] Standby current EPC solenoid coil open circuit
Fault code [DXE4KB] Standby current EPC solenoid coil short circuit
Fault code [DXE5KA] Merging-diverging main solenoid coil is open circuit
Fault code [DXE5KB] Merging-shunting main solenoid coil short circuit
Fault code [DXE6KA] Combined-shunt LS electromagnetic coil open circuit
Fault code [DXE6KB] Combined-shunt LS solenoid coil short circuit
Fault code [DY20KA] Wiper working abnormally
Fault code [DY20MA] Wiper stops abnormally
Fault code [DY2CKA] Washer drive system open circuit
Fault code [DY2CKB] Scrubber drive system short circuit
Fault code [DY2DKB] Wiper drive system (forward) short circuit
Fault code [DY2EKB] Wiper drive system (reverse) short circuit
Electrical system fault diagnosis (E mode)
Before troubleshooting electrical systems
Troubleshooting table information
E-1 When the start switch is turned to the ON position, there is no display on the machine monitor
E-2 When the starting switch is turned to the ON position (before starting the engine), the basic inspection items flash
E-3 The engine does not start (the engine does not rotate)
E-4 preheater does not work
E-5 Automatic preheating system does not work (in cold season)
E-6 All working devices, slewing and traveling mechanisms do not move or cannot be locked
E-7 Attention light comes on when the engine is running
E-8 The emergency stop item light comes on when the engine is running.
E-9 Engine coolant temperature gauge displays abnormally
E-10 Hydraulic oil temperature gauge displays abnormally
E-11 The fuel level gauge displays abnormally
E-12 The display content of the machine monitor is different from that of the applicable machine.
E-13 Machine monitor does not display some items
E-14 function switch does not work.
E-15 Automatic speed reducer does not work properly
E-16 Working mode does not change
E-17 Walking speed does not change
E-18 The alarm buzzer cannot stop
E-19 Windshield wipers and window washer not working
E-20 Maximum power function does not work properly
E-21 The swing holding brake does not work properly.
E-22 The walking alarm does not sound or stops sounding
E-23 Air conditioner is not working properly (including air conditioner abnormality record)
E-24 When the start switch is in the OFF position, the hour meter does not display
E-25 Machine monitor cannot be set while in service mode
E-26 The monitoring function is abnormal and the joystick control signal is displayed.
E-27 KOMTRAX system not working properly
Troubleshooting of hydraulic and mechanical systems (H mode)
H-1 The speed or power of the entire working device, rotation, and travel is low
H-2 engine speed drops extremely quickly or engine stalls
H-3 working device, rotation, and traveling system do not work
H-4 Abnormal sounds occur around the hydraulic pump
H-5 automatic reducer does not work
H-6 Fine control performance or low response
H-7 Boom speed or power is low
H-8 Stick has low speed or power
H-9 Bucket speed or power is low
H-10 Working equipment does not move alone
H-11 working device has large hydraulic drift
H-12 The time lag of the working device is large
H-13 When parts of the work equipment are individually flooded, other parts of the work equipment move
H-14 Maximum power function does not work
H-15 In the composite operation of the work device, the speed of the component with a large load is low
H-16 When the machine rotates and lifts the boom at the same time, the boom lifting speed is low
H-17 When the machine rotates and walks at the same time, the walking speed is greatly reduced
H-18 Deviation during machine travel
H-19 low walking speed
H-20 The machine has poor steering or low steering force
H-21 Walking speed remains unchanged or walking speed is low/high
H-22 walking system does not move (only one side)
H-23 The upper rotating platform does not rotate
H-24 Rotation acceleration or low rotation speed
H-25 When the upper rotating platform stops rotating, it rotates too much
H-26 When the upper rotating platform stops rotating, a large vibration occurs
H-27 When the upper rotating platform stops rotating, it makes a loud sound
H-28 has large hydraulic drift in rotation
H-30 cannot control the flow in the accessory oil circuit
Engine fault diagnosis (S mode)
S-1 poor starting performance
S-2 engine cannot start
S-3 engine accelerates unevenly
S-4 engine shutdown during operation
S-5 engine does not rotate smoothly
S-6 engine output is insufficient (or insufficient power)
S-7 exhaust smoke is black (incomplete combustion)
S-8 Excessive fuel consumption (or exhaust smoke is blue)
S-9 oil contaminates quickly
S-10 Excessive fuel consumption
S-11 There is oil in the coolant (or the coolant sprays out or the coolant level drops)
S-12 Oil pressure drops
S-13 Engine oil level rises (coolant/fuel enters)
S-14 Coolant temperature becomes too high (overheating)
S-15 makes unusual noises
S-16 Excessive vibration
PC (8MO) eight-MO machine fault code table
Fault code [879AKA] A/C internal sensor open circuit
Fault code [879AKB] A/C internal sensor short circuit
Fault code [879BKA] A/C external sensor open circuit
Fault code [879BKB] A/C external sensor short circuit
Fault code [879CKA] Ventilation sensor open circuit
Fault code [879CKB] Ventilation sensor short circuit
Fault code [879DKZ] Sunlight sensor open or short circuit
Fault code [879EMC] Abnormal ventilation damper
Fault code [879FMC] Air mixture damper abnormality
Fault code [879GKX] Refrigerant abnormality
Fault code [989L00] Engine controller lock warning 1
Fault code [989M00] Engine controller lock warning 2
Fault code [989N00] Engine controller lock warning 3
Fault code [AA10NX] Air filter clogged
Fault code [AB00KE] Charging voltage is low
Fault code [B@BAZG] Low oil pressure
Fault code [B@BAZK] Engine oil level is low
Fault code [B@BCNS] Engine cooling water is overheated
Fault code [B@BCZK] Radiator coolant level is low
Fault code [B@HANS] Hydraulic oil overheating
Fault code [CA111] ECM critical internal fault
Fault code [CA115] Engine Ne and Bkup speed sensor failure
Fault code [CA122] Boost pressure sensor high pressure fault
Fault code [CA123] Boost pressure sensor low pressure fault
Fault code [CA131] Throttle sensor high voltage fault
Fault code [CA132] Throttle sensor low voltage fault
Fault code [CA144] Coolant temperature sensor high voltage fault
Fault code [CA145] Coolant temperature sensor low pressure fault
Fault code [CA153] Supercharger temperature sensor high voltage fault
Fault code [CA154] Boost temperature
