[Troubleshooting] Hitachi excavator fault code fault code
(8) fault code 0041-04: 8V DC power supply and ground short
① Main Symptom If the voltage is significantly lower than 8V, it will have a significant impact on diesel engines, diesel engines will be limited to low idle state.
② cause of the malfunction is detected ECM ECM or ECM charging more than Is readout signal voltage higher than 8.45V sustained Is.
③ system response ECM will record the fault code, fault code can be viewed on the display module or .ECM ET all digital sensor data is marked as invalid data, and all the digital sensor data are set to default values.
Hitachi excavator -2, -3 Series – Maintenance fault code analysis
Excavator fault code fault code analysis, fault phenomenon
09EC Hitachi excavator sensor failure or sensor harness shorted
10EC sensor harness connection is bad, bad contact
Hitachi excavator excavator N sensor fault on behalf of the 13 abnormal sensor harness connection between N and EC bad
17 Hitachi excavators PVC failure, excavator engine does not work
Fault code 18PVC failure, excavators can not properly work
19 PVC failure excavator, excavators can not work
Hitachi excavator Hitachi excavator fault on behalf of 21 PVC failure, Hitachi excavator engine and machine function failure, not a job
22 HITACHI oil pump control is not normal
Fault code 25 excavators DP sensor and wiring harness is not connected, poor contact
26 Hitachi excavators DP sensor and wiring harness shorted
Hitachi excavator P sensor fault on behalf of the 27 excavators and harness shorted
28P Hitachi excavator sensor and harness bad contact, the input signal from the sensor is lower than 0.25V
29A sensor fault code and harness shorted, excavators input signal is greater than 4.75V
30 Hitachi excavator A bad sensor and wiring harness connector, sensor input signal falls below 0.25V
Hitachi excavator fault generation 31 R sensor and harness bad contact, T sensor input signal is greater than 4.75V
32 T Hitachi excavator bad sensor or wiring harness connector, sensor input signal falls below 0.25V
Fault code 33 excavator arm to enhance pilot pressure sensor or wire shorted, Hitachi excavator sensor input voltage is higher than 4.75 volts
Failure on behalf of the 34 Hitachi excavator excavator arm to enhance pilot pressure sensors, sensor wire is disconnected
35 excavator arm low voltage sensor input signal is greater than 4.75
Hitachi excavator Hitachi excavator arm fault code 36 low voltage sensor input signal is too small, or forearm low pressure sensor wire is disconnected
Hitachi (HLTACHL) explain in detail excavator fault code troubleshooting steps:
1 fault code 0164-04: injection-driven pressure sensor and ground short
① Main Symptom
a. diesel low power operation.
b. diesel engine idling bad.
② Cause ECM detects all of the following conditions:
. a fuel injector drive signal voltage is lower than 0.1V pressure sensor at least 0.6s;
b.5V sensor battery positive supply line and short-circuit fault code does not currently exist 0262-03;
c.5V sensor power lines and ground short circuit fault code does not currently exist 0262-04;
. d has at least a power supply to the ECM 2s;
e. cooling mode does not currently exist.
③ system response ECM will record fault code, can be viewed on the display module or ET fault code .ECM the injector driving pressure marked as invalid data, and the use of 17.5MPa pressure injection as the default .ECM will drive pressure control the valve current is set to a fixed value.
2 fault code 0164-11: injector actuation pressure sensor mechanical failure
① Main Symptom
a. diesel low power operation.
b. diesel engine idling bad.
c. Under normal operating temperature of the diesel engine difficult to start.
d. below the normal operating temperature of the diesel engine is easy to start.
② Cause ECM detects one of the following situations:
. a difference between the actual injection pressure and injection required to drive the driving pressure exceeds 3MPa;
b. leading to the fuel injection pressure control valve drive maximum or minimum output current for longer than the time required This fault code indicates that there is a mechanical fault, ECM and the electronic control system is operating normally.
③ system response ECM will record fault code, fault code can be viewed on the display module or ET.
④ Troubleshooting perhaps only at operating temperatures have failed. If the system recently repaired, then the injector drive system may exist air start the engine for several minutes under 1500r / min speed, to exclude residual air.
3 fault code 0168-02: System voltage ripple
① Main Symptom
a. diesel engine does not fire.
b. diesel engine stops running.
② Cause ECM detects any of the following situations:
. a diesel engine can not be started, the battery voltage drops below 9V, rebounded after 0.06s;
b. diesel engine can not be started, the battery voltage is three times lower in the last 7s, less than 9V.
③ system response ECM will record fault code, fault code can be viewed on the display module or ET. Only when the diesel engine ECM will record operating code.
4 fault code 0172-03: intake air temperature sensor and battery positive open / short
① Main Symptom diesel low power operation.
② Cause ECM detects all of the following conditions:
a.ECM read signal voltage above 4.92V at least 8s;
b.5V sensor battery positive supply line and short-circuit fault code does not currently exist 0262-03;
c.5V sensor power lines and ground short circuit fault code does not currently exist 0262-04;
d. supply of power to at least the existing ECM 2s.
③ system response ECM will record fault code, can be viewed on the display module or ET fault code .ECM intake air temperature will be marked as invalid data, and the use of a temperature of 85 degrees as the default.
5 fault code 0172-04: intake air temperature sensor shorted to ground
① Main Symptom diesel low power operation.
② Cause ECM detects all of the following conditions:
a.ECM read below 0.2V signal voltage of at least 8s;
b.5V sensor battery positive supply line and short-circuit fault code does not currently exist 0262-03;
c.5V sensor power lines and ground short circuit fault code does not currently exist 0262-04;
d. supply of power to at least the existing ECM 2s.
③ system response ECM will record fault code, can be viewed on the display module or ET fault code .ECM intake air temperature will be marked as invalid data, and the use of a temperature of 85 degrees as the default.
6 fault code 0175-03: oil temperature sensor and battery positive open / short
① The main symptom is no symptoms.
② Cause ECM detects all of the following conditions:
a.ECM read signal voltage above 4.92V at least 8s;
b.5V sensor battery positive supply line and short-circuit fault code does not currently exist 0262-03;
c.5V sensor power lines and ground short circuit fault code does not currently exist 0262-04;
d. supply of power to at least the existing ECM 2s.
③ system response ECM will record fault code, fault code can be viewed on the display module or ET .ECM oil temperature will be marked as invalid data, and adjust the oil temperature values into the coolant temperature value. If the coolant temperature sensor is faulty, one should use the following values:
. a diesel engine running, the oil temperature is set at 65 degrees;
When b. diesel engine stops running, the oil temperature is set to -10 degrees.
(8) fault code 0041-04: 8V DC power supply and ground short
① Main Symptom If the voltage is significantly lower than 8V, it will have a significant impact on diesel engines, diesel engines will be limited to low idle state.
② cause of the malfunction is detected ECM ECM or ECM charging more than Is readout signal voltage higher than 8.45V sustained Is.
③ system response ECM will record the fault code, fault code can be viewed on the display module or .ECM ET all digital sensor data is marked as invalid data, and all the digital sensor data are set to default values.
Hitachi excavator -2, -3 Series – Maintenance fault code analysis
Excavator fault code fault code analysis, fault phenomenon
09EC Hitachi excavator sensor failure or sensor harness shorted
10EC sensor harness connection is bad, bad contact
Hitachi excavator excavator N sensor fault on behalf of the 13 abnormal sensor harness connection between N and EC bad
17 Hitachi excavators PVC failure, excavator engine does not work
Fault code 18PVC failure, excavators can not properly work
19 PVC failure excavator, excavators can not work
Hitachi excavator Hitachi excavator fault on behalf of 21 PVC failure, Hitachi excavator engine and machine function failure, not a job
22 HITACHI oil pump control is not normal
Fault code 25 excavators DP sensor and wiring harness is not connected, poor contact
26 Hitachi excavators DP sensor and wiring harness shorted
Hitachi excavator P sensor fault on behalf of the 27 excavators and harness shorted
28P Hitachi excavator sensor and harness bad contact, the input signal from the sensor is lower than 0.25V
29A sensor fault code and harness shorted, excavators input signal is greater than 4.75V
30 Hitachi excavator A bad sensor and wiring harness connector, sensor input signal falls below 0.25V
Hitachi excavator fault generation 31 R sensor and harness bad contact, T sensor input signal is greater than 4.75V
32 T Hitachi excavator bad sensor or wiring harness connector, sensor input signal falls below 0.25V
Fault code 33 excavator arm to enhance pilot pressure sensor or wire shorted, Hitachi excavator sensor input voltage is higher than 4.75 volts
Failure on behalf of the 34 Hitachi excavator excavator arm to enhance pilot pressure sensors, sensor wire is disconnected
35 excavator arm low voltage sensor input signal is greater than 4.75
Hitachi excavator Hitachi excavator arm fault code 36 low voltage sensor input signal is too small, or forearm low pressure sensor wire is disconnected
Hitachi (HLTACHL) explain in detail excavator fault code troubleshooting steps:
1 fault code 0164-04: injection-driven pressure sensor and ground short
① Main Symptom
a. diesel low power operation.
b. diesel engine idling bad.
② Cause ECM detects all of the following conditions:
. a fuel injector drive signal voltage is lower than 0.1V pressure sensor at least 0.6s;
b.5V sensor battery positive supply line and short-circuit fault code does not currently exist 0262-03;
c.5V sensor power lines and ground short circuit fault code does not currently exist 0262-04;
. d has at least a power supply to the ECM 2s;
e. cooling mode does not currently exist.
③ system response ECM will record fault code, can be viewed on the display module or ET fault code .ECM the injector driving pressure marked as invalid data, and the use of 17.5MPa pressure injection as the default .ECM will drive pressure control the valve current is set to a fixed value.
2 fault code 0164-11: injector actuation pressure sensor mechanical failure
① Main Symptom
a. diesel low power operation.
b. diesel engine idling bad.
c. Under normal operating temperature of the diesel engine difficult to start.
d. below the normal operating temperature of the diesel engine is easy to start.
② Cause ECM detects one of the following situations:
. a difference between the actual injection pressure and injection required to drive the driving pressure exceeds 3MPa;
b. leading to the fuel injection pressure control valve drive maximum or minimum output current for longer than the time required This fault code indicates that there is a mechanical fault, ECM and the electronic control system is operating normally.
③ system response ECM will record fault code, fault code can be viewed on the display module or ET.
④ Troubleshooting perhaps only at operating temperatures have failed. If the system recently repaired, then the injector drive system may exist air start the engine for several minutes under 1500r / min speed, to exclude residual air.
3 fault code 0168-02: System voltage ripple
① Main Symptom
a. diesel engine does not fire.
b. diesel engine stops running.
② Cause ECM detects any of the following situations:
. a diesel engine can not be started, the battery voltage drops below 9V, rebounded after 0.06s;
b. diesel engine can not be started, the battery voltage is three times lower in the last 7s, less than 9V.
③ system response ECM will record fault code, fault code can be viewed on the display module or ET. Only when the diesel engine ECM will record operating code.
4 fault code 0172-03: intake air temperature sensor and battery positive open / short
① Main Symptom diesel low power operation.
② Cause ECM detects all of the following conditions:
a.ECM read signal voltage above 4.92V at least 8s;
b.5V sensor battery positive supply line and short-circuit fault code does not currently exist 0262-03;
c.5V sensor power lines and ground short circuit fault code does not currently exist 0262-04;
d. supply of power to at least the existing ECM 2s.
③ system response ECM will record fault code, can be viewed on the display module or ET fault code .ECM intake air temperature will be marked as invalid data, and the use of a temperature of 85 degrees as the default.
5 fault code 0172-04: intake air temperature sensor shorted to ground
① Main Symptom diesel low power operation.
② Cause ECM detects all of the following conditions:
a.ECM read below 0.2V signal voltage of at least 8s;
b.5V sensor battery positive supply line and short-circuit fault code does not currently exist 0262-03;
c.5V sensor power lines and ground short circuit fault code does not currently exist 0262-04;
d. supply of power to at least the existing ECM 2s.
③ system response ECM will record fault code, can be viewed on the display module or ET fault code .ECM intake air temperature will be marked as invalid data, and the use of a temperature of 85 degrees as the default.
6 fault code 0175-03: oil temperature sensor and battery positive open / short
① The main symptom is no symptoms.
② Cause ECM detects all of the following conditions:
a.ECM read signal voltage above 4.92V at least 8s;
b.5V sensor battery positive supply line and short-circuit fault code does not currently exist 0262-03;
c.5V sensor power lines and ground short circuit fault code does not currently exist 0262-04;
d. supply of power to at least the existing ECM 2s.
③ system response ECM will record fault code, fault code can be viewed on the display module or ET .ECM oil temperature will be marked as invalid data, and adjust the oil temperature values into the coolant temperature value. If the coolant temperature sensor is faulty, one should use the following values:
. a diesel engine running, the oil temperature is set at 65 degrees;
When b. diesel engine stops running, the oil temperature is set to -10 degrees.
