Error codes in the HITACHI ZAXIS ECM sensor system
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Fault code |
Malfunction |
Cause |
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636-2 |
Faulty Camshaft Angle Sensor (No Signal) |
Despite the presence of a signal from the crankshaft, there is no signal from the camshaft . |
|
636-2 |
Faulty camshaft angle sensor (Abnormal signal) |
The signal pulse from the camshaft does not match . |
|
723-2 |
Faulty crankshaft speed sensor (No signal) |
Despite the presence of a signal from the camshaft, there is no signal from the crankshaft. |
|
723-2 |
Faulty crankshaft speed sensor (Abnormal signal) |
The signal pulse from the crankshaft does not match . |
|
636-7 |
Phase mismatch at camshaft angle sensor |
There is no corresponding impulse from the camshaft in the interval of the signal from the crankshaft. |
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172-3 |
Faulty intake air temperature sensor (abnormal high voltage) |
3 minutes after the engine is turned on, the voltage at the charge air temperature sensor is higher than 4.95 V. |
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172-4 |
Faulty intake air temperature sensor (abnormal low voltage) |
The charge air temperature sensor voltage is below 0.1 V. |
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110-3 |
Faulty coolant temperature sensor (abnormal high voltage) |
The voltage at the coolant temperature sensor is higher than 4.85 V. |
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110-4 |
Faulty coolant temperature sensor (Abnormal low voltage) |
The voltage at the coolant temperature sensor is below 0.1 V. |
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102-4 |
Faulty Turbo Boost Pressure Sensor (Abnormal High Voltage ) |
The voltage at the turbo boost pressure sensor is higher than 4.9 V. |
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102-3 |
Faulty turbo boost pressure sensor (Abnormal low voltage ) |
The voltage at the turbo boost pressure sensor is below 0.1 V. |
|
10001-3 |
EGR Abnormal Position ( Exhaust Gas Recirculation System) (Brushless Type) |
A condition in which the output signal from the EGR ( Exhaust Gas Recirculation System) cannot be received. |
|
108-4 |
Atmospheric pressure sensor defective (abnormal high voltage ) |
The voltage at the atmospheric pressure sensor is higher than 3.8 V. |
|
108-3 |
Atmospheric pressure sensor defective (Abnormal low voltage ) |
The voltage at the barometric pressure sensor is below 0.5 V. |
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174-3 |
Faulty fuel temperature sensor (abnormal high voltage) |
3 minutes after the engine is turned on, the voltage at the fuel temperature sensor is higher than 4.85 V. |
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174-4 |
Faulty fuel temperature sensor (Abnormal low voltage) |
The voltage at the fuel temperature sensor is less than 0.1 V. |
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Supposed symptoms of malfunctions in the actual operation of the machine |
Probable conditions in standby mode |
Fault code ( Tech 2) |
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During engine operation, there are no deviations in the operation of the machine. Once the engine has stopped, restarting is not possible. |
While the machine is running, operate according to the indication of the crankshaft sensor. Once the motor has stopped, it cannot be restarted (to prevent damage to the motor). |
P0340 |
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P0341 |
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Output power may decrease, white smoke and vibration may occur . The engine may stall. (If the camshaft sensor is OK, the engine can be restarted.) |
Operate according to the indication of the camshaft sensor. |
P0335 |
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P0336 |
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During engine operation, there are no deviations in the operation of the machine. After the engine has stopped, restarting is not possible. |
There is no smoothness in the timing chain and belt rotation, rotation in the opposite direction is observed. |
P1345 |
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No specific signs. |
When starting the engine at -10°C: (Turn on the engine regardless of the condition.) When operation is performed at 25°C: (Operate normally) |
P0113 |
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P0112 |
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Normal temperature: When the engine is turned on, dark smoke may appear and the burning sound in the engine may become loud . While the machine is warming up at low ambient temperatures: Unstable idling, engine stall or white smoke may occur. |
When starting the engine at -20°C: (Turn on the engine in any condition.) When operation is performed at 80°C: (Operate normally) |
P0118 |
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P0117 |
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Dark smoke appears. |
Unable to adjust turbo boost pressure. |
P0238 |
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P0237 |
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Effect on exhaust gases. |
Since the sensor input is not accurate, it cannot be controlled. Exhaust gases deteriorate. The EGR (Exhaust Gas Recirculation ) valve must be fully open while the engine is running. |
P0487 |
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Dark smoke appears at high altitude. |
Atmospheric pressure 80 kPa (0.8 kgf / cm 2 ), (2000 m above sea level). |
P0108 |
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O0107 |
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No specific signs. |
When starting the engine at -20°C: (Turn on the engine in any condition.) When operation is performed at 70°C: (Operate normally) |
P0183 |
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P0182 |
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Fault code |
Malfunction |
Cause |
|
157-3 |
Faulty Fuel Rail Pressure Sensor (Abnormal High Voltage) |
The voltage at the fuel rail pressure sensor is greater than 4.5 V. |
|
157-3 |
Faulty Fuel Rail Pressure Sensor (Abnormal Low Voltage) |
The voltage at the fuel rail pressure sensor is below 0.7 V. |
|
100-4 |
Faulty Engine Oil Pressure Sensor (Abnormal High Voltage ) |
The voltage at the engine oil pressure sensor is higher than 4.85 V. |
|
100-3 |
Faulty Engine Oil Pressure Sensor (Abnormal Low Voltage ) |
The voltage at the fuel rail pressure sensor is below 0.1 V. |
|
105-3 |
intake air temperature sensor (abnormal high voltage) |
The voltage at the charge air temperature sensor is higher than 4.95 V 5 minutes after the engine is started or when the coolant temperature is above 50 °C. |
|
105-4 |
intake air temperature sensor (Abnormal low voltage) |
charge air temperature sensor voltage is below 0.1 V. |
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Supposed symptoms of malfunctions in the actual operation of the machine |
Probable conditions in standby mode |
Fault code ( Tech 2) |
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The engine may stop. The output power is reduced. |
Inability to control the fuel pump. |
P0193 |
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P0192 |
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no influence while the machine is running . |
No specific signs. |
P0523 |
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P0522 |
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no influence while the machine is running . |
No specific signs. |
P1113 |
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Fault code |
Malfunction |
Effect on engine operation (Probable) |
Operating mode (Current status) |
Note |
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A |
B |
C |
D |
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|
636-2 |
Faulty Camshaft Angle Sensor (No Signal) |
Influence does not appear during operation After the engine has stopped, restarting is not possible . |
ABOUT |
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ABOUT |
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636-2 |
Faulty camshaft angle sensor (Abnormal signal) |
ABOUT |
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ABOUT |
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723-2 |
Faulty crankshaft speed sensor (No signal) |
The output power is not reduced. |
ABOUT |
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723-2 |
Faulty crankshaft speed sensor (Abnormal signal) |
ABOUT |
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636-7 |
camshaft angle sensor |
Influence does not appear during operation After the engine has stopped, restarting is not possible . |
ABOUT |
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ABOUT |
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172-3 |
Faulty charge air temperature sensor (abnormal high voltage) |
The output power is not reduced. |
ABOUT |
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172-4 |
Faulty charge air temperature sensor (Abnormal low voltage) |
ABOUT |
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110-3 |
Faulty coolant temperature sensor (abnormal high voltage) |
The output power is not reduced. |
ABOUT |
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110-4 |
Faulty coolant temperature sensor (Abnormal low voltage) |
ABOUT |
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102-4 |
Faulty turbocharger pressure sensor (abnormal high voltage) |
The output power is not reduced. |
ABOUT |
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102-3 |
Faulty turbocharger pressure sensor (Abnormal low voltage) |
ABOUT |
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10001-3 |
EGR Abnormal Position (Exhaust Gas Recirculation System) (Brushless Type) |
The output power does not change. |
ABOUT |
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108-4 |
Atmospheric pressure sensor defective (Abnormal high voltage) |
The output power is not reduced. |
ABOUT |
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108-3 |
Atmospheric pressure sensor defective (Abnormal low voltage) |
ABOUT |
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174-3 |
Faulty Fuel Temperature Sensor (Abnormal High Voltage) |
The output power is not reduced. |
ABOUT |
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174-4 |
Faulty Fuel Temperature Sensor (Abnormal Low Voltage) |
ABOUT |
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157-3 |
Faulty Fuel Rail Pressure Sensor (Abnormal High Voltage ) |
Output power reduction: 70% |
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ABOUT |
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157-4 |
Faulty Fuel Rail Pressure Sensor (Abnormal Low Voltage ) |
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ABOUT |
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100-4 |
Faulty Engine Oil Pressure Sensor (Abnormal High Voltage) |
The output power does not change. |
ABOUT |
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100-3 |
Faulty Engine Oil Pressure Sensor (Abnormal Low Voltage) |
ABOUT |
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105-3 |
intake air temperature sensor (abnormal high voltage) |
The output power does not change. |
ABOUT |
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105-4 |
intake air temperature sensor (Abnormal low voltage) |
ABOUT |
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Operating mode
A: With dig function.
B: Ability to move the machine with the boom up. (Turn control is not possible.)
C: Only the motor is running. (Traveling, digging, and light load operation are not possible.)
D: Engine cannot turn off/on.
IMPORTANT: When DTC 723-2 (Crankshaft Speed Sensor Faulty) is displayed, the engine will not start. Faulty camshaft angle sensor, although DTCs 636-2 (failed camshaft angle sensor) and 636-7 (phase mismatch on camshaft angle sensor) are not displayed.
TROUBLE CODES IN ECM FUNCTION (ENGINE CONTROL UNIT) 100, 102, 105, 108, 110, 157, 172
|
Fault code |
Malfunction |
Fault code ( Tech 2) |
Engine Troubleshooting Guide |
|
100-3 |
Malfunctioning Engine Oil Pressure Sensor (Abnormal Low Voltage ) |
P0522 |
1E-403 |
|
100-4 |
Malfunctioning Engine Oil Pressure Sensor (Abnormal High Voltage ) |
P0523 |
1E-409 |
|
102-3 |
Turbocharger Pressure Sensor Malfunction (Abnormal Low Voltage ) |
P0237 |
1E-341 |
|
102-4 |
Turbocharger Pressure Sensor Malfunction (Abnormal High Voltage ) |
P0238 |
1E-348 |
|
105-3 |
Charge Air Temperature Sensor Malfunction (Abnormal High Voltage) |
P1113 |
1E-460 |
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105-4 |
Charge Air Temperature Sensor Malfunction (Abnormal Low Voltage) |
P1112 |
1E-452 |
|
108-3 |
Atmospheric pressure sensor malfunction (Abnormal low voltage) |
P0107 |
1E-231 |
|
108-4 |
Atmospheric pressure sensor malfunction (Abnormal high voltage ) |
P0108 |
1E-238 |
|
110-3 |
Coolant Temperature Sensor Malfunction (Abnormal High Voltage) |
P0118 |
1E-266 |
|
110-4 |
Coolant Temperature Sensor Malfunction (Abnormal Low Voltage) |
P0117 |
1E-259 |
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157-3 |
Fuel Rail Pressure Sensor Malfunction (Abnormal High Voltage) |
P0193 |
1E-294 |
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157-4 |
Fuel Rail Pressure Sensor Malfunction (Abnormal Low Voltage) |
P0192 |
1E-288 |
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172-3 |
Charge Air Temperature Sensor Malfunction (Abnormal High Voltage) |
P0113 |
1E-251 |
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172-4 |
Charge Air Temperature Sensor Malfunction (Abnormal Low Voltage) |
P0112 |
1E-245 |
TROUBLE CODES IN THE ECM FUNCTION (ENGINE CONTROL UNIT) 174, 636, 723, 10001
|
Fault code |
Malfunction |
Fault code ( Tech 2) |
Engine Troubleshooting Guide |
|
174-3 |
Fuel Temperature Sensor Malfunction (Abnormal High Voltage ) |
P0183 |
1E-280 |
|
174-4 |
Fuel Temperature Sensor Malfunction (Abnormal Low Voltage ) |
P0182 |
1E-274 |
|
636-2 |
Malfunctioning Camshaft Angle Sensor (No Signal) |
P0340 |
1E-368 |
|
636-2 |
Malfunctioning Camshaft Angle Sensor (Abnormal Signal) |
P0341 |
1E-375 |
|
636-7 |
Camshaft angle sensor phase mismatch |
P1345 |
1E-524 |
|
723-2 |
Abnormal operation of the crankshaft speed sensor (No signal) |
P0335 |
1E-355 |
|
723-2 |
Crankshaft Speed Sensor Abnormal Operation (Abnormal Signal) |
P0336 |
1E-362 |
|
10001-3 |
EGR Abnormal Position (Exhaust Gas Recirculation System) (Brushless Type) |
P0487 |
1E-391 |
IMPORTANT: When DTC 723-2 (Crankshaft Speed Sensor Faulty) is displayed, the engine will not start. Faulty camshaft angle sensor, although DTCs 636-2 (failed camshaft angle sensor) and 636-7 (phase mismatch on camshaft angle sensor) are not displayed.