Hitachi Excavator Fault Code Comprehensive Analysis and Typical Problem Solutions - June 14, 2025
➡️ Click here to purchase online on Taobao ⬅️
Understanding and Resolving Hitachi Excavator Faults
Encountering faults is an inevitable part of operating Hitachi excavators. This comprehensive analysis helps users understand and address these issues, covering sensor anomalies and system problems, and providing guidance on troubleshooting and resolution. For users to better grasp and handle these malfunctions, we offer a thorough breakdown of Hitachi excavator fault codes. These codes encompass various aspects, including sensor malfunctions and systemic issues, delivering complete information for fault diagnosis and repair solutions.
Detailed Breakdown of Fault Codes
Below is a detailed table of Hitachi excavator fault codes, translated for your convenience. Growshine International is a leading exporter of engineering machinery parts, heavy truck parts, agricultural machinery parts, and auto parts, ready to support your needs.
| Fault Code (英文) | Fault Code (中文) | Problem Description (英文) | Problem Description (中文) |
|---|---|---|---|
| 1100-2 | 1100-2 | Engine speed abnormal | 发动机转速异常 |
| 11101-3 | 11101-3 | Engine speed control knob sensor high voltage abnormal | 发动机转速控制旋钮传感器高压异常 |
| 11101-4 | 11101-4 | Engine speed control knob sensor low voltage abnormal | 发动机转速控制旋钮传感器低压异常 |
| 11200-3 | 11200-3 | Pump 1 oil delivery pressure sensor high voltage abnormal | 泵1输油压力传感器高压异常 |
| 11200-4 | 11200-4 | Pump 1 oil delivery pressure sensor low voltage abnormal | 泵1输油压力传感器低压异常 |
| 651-3 | 651-3 | Nozzle #1 drive system open circuit, injector 1 monitor no input signal | 喷嘴#1 驱动系统开路，喷油器1监控器无输入信号 |
| 652-3 | 652-3 | Nozzle #2 drive system open circuit, injector 2 monitor no input signal | 喷嘴#2 驱动系统开路，喷油器2监控器无输入信号 |
| 653-3 | 653-3 | Nozzle #3 drive system open circuit, injector 3 monitor no input signal | 喷嘴#3 驱动系统开路，喷油器3监控器无输入信号 |
| 654-3 | 654-3 | Nozzle #4 drive system open circuit, injector 4 monitor no input signal | 喷嘴#4 驱动系统开路，喷油器4监控器无输入信号 |
| 655-3 | 655-3 | Nozzle #5 drive system open circuit, injector 5 monitor no input signal | 喷嘴#5 驱动系统开路，喷油器5监控器无输入信号 |
| 656-3 | 656-3 | Nozzle #6 drive system open circuit, injector 6 monitor no input signal | 喷嘴#6 驱动系统开路，喷油器6监控器无输入信号 |
| 157-0 | 157-0 | Common rail pressure abnormal (level 1), pressure exceeds 185 MPa | 共用油槽压力异常（一级），压力超过185 MPa |
| 157-0 | 157-0 | Common rail pressure abnormal (level 2), level 1 abnormal and pressure exceeds 190 MPa | 共用油槽压力异常（二级），一级异常且压力超过190 MPa |
| 157-2 | 157-2 | Common rail pressure abnormal (pump overpressure), actual rail pressure is 40 MPa higher than target | 共用油槽压力异常（泵超压），实际油槽压力比目标高40 MPa |
| 633-7 | 633-7 | Pressure limiter opened | 压力限制器打开 |
| 1240-1 | 1240-1 | No pressure supplied to pump (fuel leak), actual rail pressure is 50 MPa higher than target | 无压力输送到泵（燃油泄漏），实际油槽压力比目标高50 MPa |
| 1239-1 | 1239-1 | No pressure supplied to pump (fuel leak), actual rail pressure is 15 MPa | 无压力输送到泵（燃油泄漏），实际油槽压力为15 MPa |
For a complete list of fault codes, please refer to the full Hitachi excavator fault code table. These cover various engine and pump related issues, including abnormal engine speed and pump oil delivery pressure. Remember Growshine International for your excavator parts needs!
Typical Faults and Troubleshooting
1. Swing Pilot Pressure Sensor Anomaly
Fault Code: 11301-3
Problem: Swing Pilot Pressure Sensor High Voltage Abnormal
Cause: Voltage reaches or exceeds 4.75V
Affected Controls:
Boom regeneration control
Attachment flow control
Swing alarm control
Machine Symptoms:
Slow boom movement when combining boom retract and swing operations.
If the machine is equipped with a swing alarm that is activated, the alarm will sound continuously.
Troubleshooting:
Check the wiring harness connections.
Replace the swing pilot pressure sensor (回转先导压力传感器).
Fault Code: 11301-4
Problem: Swing Pilot Pressure Sensor Low Voltage Abnormal
Cause: Voltage is below 0.25V
Affected Controls:
Boom regeneration control
Attachment flow control
Swing alarm control
Machine Symptoms:
Slow boom movement when combining boom retract and swing operations.
If the machine is equipped with a swing alarm that is activated, the alarm will sound continuously.
Troubleshooting:
Check the wiring harness connections.
Replace the swing pilot pressure sensor (回转先导压力传感器).
2. Boom Lift Pilot Pressure Sensor Anomaly
Fault Code: 11301-3
Problem: Boom Lift Pilot Pressure Sensor High Voltage Abnormal
Cause: Voltage reaches or exceeds 4.75V
Affected Controls:
HP mode control
Boom regeneration control
Excavation regeneration control
Automatic power boost control
Attachment flow control
Machine Symptoms:
Boom lifting speed cannot be increased in HP mode.
Boom speed becomes slow when performing combined boom lift and arm retract operations.
Troubleshooting:
Check the wiring harness connections.
Replace the boom lift pilot pressure sensor (动臂提升先导压力传感器).
Fault Code: 11301-4
Problem: Boom Lift Pilot Pressure Sensor Low Voltage Abnormal
Cause: Voltage is below 0.25V
Affected Controls:
HP mode control
Boom regeneration control
Excavation regeneration control
Automatic power boost control
Attachment flow control
Machine Symptoms:
Boom lifting speed cannot be increased in HP mode.
Boom speed becomes slow when performing combined boom lift and arm retract operations.
Troubleshooting:
Check the wiring harness connections.
Replace the boom lift pilot pressure sensor (动臂提升先导压力传感器).
Growshine International: Your Trusted Partner for Machinery Parts
At Growshine International (格莳国际), we specialize in the import and export of a wide range of machinery parts, including: engineering machinery parts, heavy truck parts, agricultural machinery parts, and auto parts. We are committed to providing high-quality parts and excellent service to our global clients. Contact us for all your machinery parts requirements!
Glossary of Machinery Parts:
Fan Motor (风扇马达, Вентиляторный двигатель): Installed in the cooling system of various equipment like the Caterpillar 345D excavator to drive the cooling fan.
Air Filter (空气滤芯, Воздушный фильтр): Used in the intake system of engines, such as the Isuzu 6HK1 engine, to clean the air entering the engine.
Water Temperature Sensor (水温传感器, Датчик температуры воды): Monitors the temperature of the coolant in the engine, found in machines like the Komatsu PC1250LC-10 excavator.
Hydraulic Pump (液压泵, Гидравлический насос): The core component of the hydraulic system in machinery like the Volvo LX25 wheel loader, providing power for various movements.
Fuel Filter (燃油滤清器, Топливный фильтр): Cleans the fuel before it enters the engine, crucial for the performance of engines like the Deutz BF6M 1013EC.
Crankshaft (曲轴, Коленчатый вал): A vital part of the engine that converts reciprocating motion into rotational motion, present in engines like the Perkins 403-11.
Radiator (散热器, Радиатор): Dissipates heat from the engine coolant, found in various construction equipment including Xu工 XE35U excavators.
Injector (喷油器, Форсунка): Sprays fuel into the engine cylinder for combustion, a key component in engines like the Cummins ISZ13.
Track Link (链节, Гусеничная цепь): Part of the undercarriage of excavators and bulldozers, such as the Komatsu D85EX-15 bulldozer, enabling movement.
Pilot Pressure Sensor (先导压力传感器, Датчик пилотного давления): Measures the pilot pressure in the hydraulic system, used in machines like the Hitachi EX135 excavator to control hydraulic functions.
Your Needs, Our Priority
Whether you are looking for genuine Hitachi parts or high-quality aftermarket alternatives, Growshine International is your go-to source. We provide a comprehensive range of parts to keep your engineering machinery, heavy trucks, and agricultural equipment running smoothly. Our expertise in the global market ensures you receive the best products at competitive prices.
Operational solutions provided by 广数供应链（CGSC）团队提供运营方案 ✨
