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Geoty company established in 2012 mainly provides machinery engine parts and diesel engine assembly, especially for excavators, loaders and forklifts, our products almost covers all ranges of machinery engines.

image for Komatsu excavator old model code table PC (-7) model machine fault code

Komatsu excavator old model code table PC (-7) model machine fault code


2024-08-05 03:38:00.871Z

E01, the automatic mode system in the HYPER system.
E02, PC-EPC system.
E03. Swing parking brake system.
Joystick neutral system in E04+CALL and HYPER systems.
E05, speed regulator motor system.
EPC solenoid valve drive system in E06 CALL and HYPER systems.
E09, HYPER-GX system is shut down. CALL, HYPER joystick and EPC solenoid valve drive system

E101. The fault history record is abnormal.
E102, clock data is abnormal.
E103, the buzzer output is short-circuited, and the buzzer drive wiring harness is in contact with the 24V power line.
E104. The air filter is clogged.
E108. The water temperature is above 105℃.

[E112] (Short circuit in the forward rotation system of the windshield wiper motor drive) [E113] (Short circuit in the reverse rotation system of the windshield wiper motor drive) [E114] (Short circuit in the window washer drive system) [E115] (Windshield wiper motor drive system short circuit Abnormal movement of the windshield wiper) [E116] (Abnormal windshield wiper retraction) [E117] (Engine controller S-network communication failure) [E118] (Pump control S-network communication failure) [E128] (Monitor communication abnormality) [ E201] (travel interlock solenoid valve short circuit) E202, LS selection solenoid valve circuit short circuit
[E203] (swing holding brake solenoid valve short circuit) [E204] (merging/diverging solenoid valve short circuit) [E205] (2-stage overflow solenoid valve short circuit) [E206] (traveling speed conversion solenoid valve short circuit) E207, fast mode Solenoid valve circuit short circuit.
E208, fast mode solenoid valve circuit is open [E211] (travel interlock solenoid valve is disconnected) 329 [E213] (rotation holding brake solenoid valve is disconnected) [E214] (merging/diverging solenoid valve is disconnected) [E215] ( Level 2 overflow solenoid valve is disconnected) [E216] (Travel speed conversion solenoid valve is disconnected) [E217] (Input mode code abnormality) [E218] (S-network communication is disconnected) [E222] (LS-EPC solenoid valve Short circuit) [E223] (LS-EPC solenoid valve system disconnected) [E224] (Front pump pressure sensor abnormality) [E225] (Rear pump pressure sensor abnormality) [E226] (Pressure sensor power supply abnormality) [E227] (Engine speed Sensor abnormality) [E228] (Accessory device return switch relay short circuit) [E232] (PC-EPC solenoid valve short circuit) [E233] (PC-EPC solenoid valve system open circuit) [E238] (Accessory device return switch relay open circuit) [ E245] (Attached device oil flow speed adjustment EPC is short-circuited) [E246] (Attached device oil flow speed adjustment EPC is short-circuited) [E247] (Bucket retraction PPC pressure sensor abnormality [E248] (Bucket retraction PPC pressure sensor abnormality ) [E257] (Pump abnormality) [E315] (Battery relay drive short circuit) [E91B] (Engine Ne speed sensor problem) [E91C] (Engine G speed sensor problem) [E920] (Engine type selection error) [E921] ( Engine type does not comply) [E931] (Fuel dial system error) [E934] (Engine coolant high temperature sensor error)

[E936] (Engine oil pressure switch error)

[E93C] (Engine boost sensor error)

[E93D] (Engine fuel temperature sensor error)

[E953] (Engine communication abnormality)

[E954] (Engine start switch short circuit)

[E955] (Engine S-net error)

[E956] (Engine power supply failure (1))

[E957] (Engine power supply failure (2))

[E95A] (Engine flow adjustment switch signal error)

[E96A] (Engine coolant low temperature sensor error)

[E970] (PCV1 current overload)

[E971] (PCV2 current overload)

[E974] (PCV1 circuit cut off)

[E975] (PCV2 circuit cut off)

[E977] (Oil passage pressure sensor error)

[E979] (Oil passage pressure is high)

[E97A] (Oil passage pressure abnormality)

[E97B] (Oil passage pressure is low)

[E97C] (Oil passage pressure too low)

[E97D] (oil gallery pressure out of control)

[E980] (Engine controller abnormality)

[E981] (Fuel 1 open circuit)

[E982] (Fuel 2 open circuit)

[E983] (Fuel 3 open circuit)

[E984] (Fuel 4 open circuit)

[E985] (Fuel 5 open circuit)

[E986] (Fuel 6 open circuit)

[E98A] (Fuel 1-3 short circuit)

[E98B] (Fuel 4-6 short circuit)

[A000N1] (Engine speed stalls at high idle)

[A000N2] (Engine speed stalls at low idle)

[AA10NX] (air filter clogged)

[AB00KE] (low charging voltage)

[B@BAZG] (Low engine oil pressure)

[B@BAZK] (Low engine oil level)

[B@BCNS] (Engine cooling water is overheated)

[B@BCZK] (radiator water level is low)

[B@HANS] (Hydraulic oil overheated

Troubleshooting of hydraulic and mechanical systems (E-mode)

E-1 The engine does not start (the engine does not rotate)

E-2 preheater does not work

E-3 The automatic engine warm-up device does not work

E-4 automatic reducer does not work

E-5 All working equipment, rotation and walking are immobile

E-6 single-point contact afterburner switch does not work

E-7 The machine thrust increase function does not operate normally

E-8 Auxiliary circuit cannot be checked

E-9 All monitor panels are not displayed

E-10 monitor panel display part missing

The display content of the E-11 monitor panel has nothing to do with the model.

E-12 When the engine is running, the red light on the fuel level monitor is on.

E-13 Engine cooling water temperature gauge indication is inaccurate

E-14 Hydraulic oil temperature gauge display is inaccurate

E-15 Fuel gauge display is inaccurate

E-16 Rotary lock monitor code display is inaccurate

E-17 No display when operating the monitor switch

E-18 Windshield and wipers do not work

E-19 Buzzer alarm cannot be eliminated

E-20 The “Boom Lift” display in the monitor function is incorrect.

E-21 The “boom down” display in the monitor function is incorrect.

E-22 The “stick retraction” display in the monitor function is incorrect.

E-23 The “stick push out” display in the monitor function is incorrect.

E-24 “Bucket excavation” is displayed incorrectly in the monitor function

E-25 “Bucket unloading” is displayed incorrectly in the monitor function

E-26 “Rotation” display in the monitor function is incorrect

E-27 “Walking” display in the monitor function is incorrect

E-28 The “travel pressure difference” display in the monitor function is incorrect.

E-29 “Service” is displayed incorrectly in the monitor function

E-30 walking alarm code does not sound or sounds continuously

E-32 Air conditioner system troubleshooting

Troubleshooting of hydraulic and mechanical systems (H mode)

Hydraulic and mechanical systems

H-1 All working devices lack power or have slow walking and rotation speeds

H-2 Engine speed suddenly drops or engine stalls

H-3 The working equipment, walking or turning does not move.

H-4 Unusual noises are heard from around the hydraulic pump

H-5 automatic reducer does not work

H-6 Micro operation mode does not work

H-7 The boom moves slowly or lacks power.

H-8 stick moves slowly or lacks power

H-9 bucket moves slowly or lacks power

H-10 When operating alone, the working device does not move

H-11 work unit hydraulic drift a little too fast

H-12 working device has a large time lag

H-13 When a single oil line overflows, other working devices move

H-14 touch-type afterburner switch does not work

H-15 Machine force increasing function does not work

H-16 Work equipment subjected to large loads in compound operations moves slowly

H-17 During the rotation + boom lifting operation, the boom moves slowly

H-18 During turning + walking, the walking speed suddenly drops

H-19 The machine deviates while walking

H-20 machine moves slowly

H-21 machine is not easy to turn or lacks power

H-22 The walking speed cannot be converted and is slower or faster than the predetermined speed.

H-23 track shoes cannot turn (only one side)

H-24 The machine does not rotate

H-25 Rotation acceleration is poor or rotation is slow

H-26 Overtravel is too large when stopping rotation

H-27 Big impact when stopping rotation

H-28 Causes loud abnormal noise when stopping rotation

H-29 The natural drift of rotation is too large

H-30 Accessory device circuit does not change

H-31 The flow rate cannot be adjusted in the auxiliary loop

Troubleshooting the engine system (S mode)

Troubleshooting the engine system (S mode)

How to use the troubleshooting sheet

S-1 poor startup performance (frequent startup is time-consuming)

S-2 engine cannot start

S-3 engine cannot start smoothly (poor tracking)

S-4 engine stalls during operation

S-5 engine runs unevenly (vibration)

S-6 engine output is weak (or lacks power)

S-7 exhaust is black (incomplete combustion)

S-8 Excessive oil consumption (or blue exhaust smoke)

S-9 Engine oil gets dirty quickly

S-10 Excessive fuel consumption

S-11 Engine oil enters the cooling water (or the water splashes back, or the water level drops)

S-12 engine oil pressure alarm light is on (oil pressure drops)

S-13 Engine oil level rises (water and fuel enter the engine oil)

S-14 Water temperature is too high (overheated

S-15 produces abnormal noise

S-16 Excessive vibration