Hitachi Excavator Fault Codes and Troubleshooting Guide - June 14, 2025
Hitachi Excavator Fault Code Table
| Fault Code | Problem | Cause | Affected Control | Machine Work Symptoms | Notes |
|---|---|---|---|---|---|
| 11301-3 | Swing Pilot Pressure Sensor High Pressure Abnormal | Voltage 4.75V or above | (1) Stick Regeneration Control (2) Attachment Flow Control (3) Swing Alarm Control | (1) Stick retract and swing combined operation stick speed is slow (2) If the machine is equipped with a swing alarm and when the swing alarm is activated, it keeps sounding | (1) Check wiring harness (2) Replace swing pilot pressure sensor |
| 11301-4 | Swing Pilot Pressure Sensor Low Pressure Abnormal | Voltage less than 0.25V | (1) Stick Regeneration Control (2) Attachment Flow Control (3) Swing Alarm Control | (1) Stick retract and swing combined operation stick speed is slow (2) If the machine is equipped with a swing alarm and when the swing alarm is activated, it keeps sounding | (1) Check wiring harness (2) Replace swing pilot pressure sensor |
| 11301-3 | Boom Lifting Pilot Pressure Sensor High Pressure Abnormal | Voltage 4.75V or above | (1) HP Mode Control (2) Stick Regeneration Control (3) Excavation Regeneration Control (4) Automatic Power Boost Control (5) Attachment Flow Control | (1) When HP control is active, boom lifting speed does not increase (2) Stick retract and boom lifting combined operation stick speed is slow | (1) Check wiring harness (2) Replace boom lifting pilot pressure sensor |
| 11301-4 | Boom Lifting Pilot Pressure Sensor Low Pressure Abnormal | Voltage less than 0.25V | (1) HP Mode Control (2) Stick Regeneration Control (3) Excavation Regeneration Control (4) Automatic Power Boost Control (5) Attachment Flow Control | (1) When HP control is active, boom lifting speed does not increase (2) Stick retract and boom lifting combined operation stick speed is slow | (1) Check wiring harness (2) Replace boom lifting pilot pressure sensor |
Understanding Hitachi Excavator Fault Codes 11301-3 and 11301-4
Encountering issues with your Hitachi excavator can lead to significant downtime. Understanding the fault codes is the first step towards efficient troubleshooting and repair. This guide focuses on fault codes 11301-3 and 11301-4, both related to the pilot pressure sensors in your Hitachi machine.
Fault code 11301-3 indicates a high pressure abnormal reading from either the swing pilot pressure sensor or the boom lifting pilot pressure sensor. This occurs when the voltage signal from the sensor reaches 4.75V or higher. Conversely, fault code 11301-4 signifies a low pressure abnormal reading from the same sensors, with a voltage signal dropping below 0.25V.
Impact on Hitachi Excavator Operations
These sensor abnormalities can affect several critical controls in your Hitachi excavator. For the swing pilot pressure sensor, both high and low pressure issues can impact the stick regeneration control, leading to slower stick speeds during combined operations like stick retract and swing. Additionally, the attachment flow control and the swing alarm control can be affected. If your Hitachi excavator has a swing alarm, it might sound continuously when activated.
For the boom lifting pilot pressure sensor, high or low pressure readings can hinder the HP mode control, preventing the boom lifting speed from increasing when in HP mode. It can also slow down the stick during combined operations like stick retract and boom lifting. Other affected controls include stick regeneration control, excavation regeneration control, automatic power boost control, and attachment flow control.
Troubleshooting Your Hitachi Excavator Sensors
When these fault codes appear on your Hitachi excavator, the first step is to check the wiring harness connected to the respective pilot pressure sensor. Ensure there are no visible damages, loose connections, or corrosion. If the wiring seems to be in good condition, the next recommended step is to replace the回转先导压力传感器 (swing pilot pressure sensor) or the 动臂提升先导压力传感器 (boom lifting pilot pressure sensor) depending on which fault code is active.
Accurate diagnosis and timely replacement of faulty sensors are crucial to restoring the optimal performance of your Hitachi excavator. Growshine International is your trusted partner for sourcing high-quality engineering machinery parts, including pilot pressure sensors for Hitachi excavators. We also specialize in 重卡配件 (heavy truck parts), 农机配件 (agricultural machinery parts), and 汽车配件 (auto parts), offering comprehensive solutions for your machinery and vehicle needs through our import and export trade services.
Key Long-Tail Keywords for Your Search:
Hitachi excavator pilot pressure sensor replacement
Troubleshoot Hitachi 11301-3 error
Fix Hitachi 11301-4 fault
回转先导压力传感器故障诊断 (swing pilot pressure sensor fault diagnosis)
动臂提升先导压力传感器高压 (boom lifting pilot pressure sensor high pressure)
Excavator stick speed slow with swing
HP mode not working excavator
Construction equipment sensor issues
Heavy equipment electrical problems
Agricultural machinery sensor failure
Auto parts pressure sensor malfunction
Import export engineering machinery parts
Buy Hitachi excavator parts online
Wholesale heavy truck components
Agricultural equipment repair parts
Automotive sensor suppliers
Excavator hydraulic system troubleshooting
Heavy machinery maintenance guide
农机液压传感器 (agricultural machinery hydraulic sensor)
汽车压力传感器故障 (car pressure sensor failure)
Glossary of Key Machinery Parts:
风扇马达 (Fēngshàn mǎdá) / Fan Motor / Вентиляторный двигатель: 安装在卡特彼勒 345D 上，用于驱动冷却风扇。(Installed on the Caterpillar 345D to drive the cooling fan.) (Устанавливается на Caterpillar 345D для привода вентилятора охлаждения.)
水温传感器 (Shuǐwēn chuāngǎnqì) / Water Temperature Sensor / Датчик температуры воды: 用于监测小松 PC200-8 挖掘机的发动机温度。(Used to monitor the engine temperature of the Komatsu PC200-8 excavator.) (Используется для контроля температуры двигателя экскаватора Komatsu PC200-8.)
空气滤芯 (Kōngqì lǜxīn) / Air Filter Element / Воздушный фильтрующий элемент: 常林装载机上用于过滤进入发动机的空气。(Used on Changlin loaders to filter the air entering the engine.) (Используется на погрузчиках Changlin для фильтрации воздуха, поступающего в двигатель.)
机油滤清器 (Jīyóu lǜqīngqì) / Oil Filter / Масляный фильтр: 用于过滤沃尔沃重型卡车的发动机机油。(Used to filter the engine oil of Volvo heavy trucks.) (Используется для фильтрации моторного масла тяжелых грузовиков Volvo.)
喷油器 (Pēnyóuqì) / Injector / Форсунка: 电装共轨喷油器是五十铃 4HK1 发动机的关键部件。(Denso common rail injectors are key components of Isuzu 4HK1 engines.) (Инжекторы Denso Common Rail являются ключевыми компонентами двигателей Isuzu 4HK1.)
曲轴 (Qūzhóu) / Crankshaft / Коленчатый вал: 用于珀金斯 403-11 发动机将活塞的往复运动转化为旋转运动。(Used in the Perkins 403-11 engine to convert the reciprocating motion of the pistons into rotational motion.) (Используется в двигателе Perkins 403-11 для преобразования возвратно-поступательного движения поршней во вращательное движение.)
液压泵 (Yèyā bèng) / Hydraulic Pump / Гидравлический насос: 卡特彼勒挖掘机使用液压泵来提供操作各种液压缸所需的动力。(Caterpillar excavators use hydraulic pumps to provide the power needed to operate various hydraulic cylinders.) (Экскаваторы Caterpillar используют гидравлические насосы для обеспечения мощности, необходимой для работы различных гидравлических цилиндров.)
轮胎 (Lúntāi) / Tire / Шина: 三角轮胎广泛应用于各种重型车辆。(Triangle tires are widely used in various heavy-duty vehicles.) (Шины Triangle широко используются в различных тяжелых транспортных средствах.)
驾驶室 (Jiàshǐ shì) / Cabin / Кабина: 徐工推土机的驾驶室为操作员提供了舒适安全的工作环境。(The cabin of XCMG bulldozers provides a comfortable and safe working environment for the operator.) (Кабина бульдозеров XCMG обеспечивает комфортные и безопасные условия работы для оператора.)
刹车片 (Shāchē piàn) / Brake Pads / Тормозные колодки: 适用于奔驰卡车的耐磨刹车片，确保行车安全。(Wear-resistant brake pads suitable for Mercedes-Benz trucks ensure driving safety.) (Износостойкие тормозные колодки, подходящие для грузовиков Mercedes-Benz, обеспечивают безопасность вождения.)
Growshine International - Your Partner in Machinery Parts
Growshine International is a leading import and export company specializing in engineering machinery parts, heavy truck parts, agricultural machinery parts, and auto parts. We are committed to providing our global customers with high-quality, reliable components at competitive prices. Our extensive network and industry expertise allow us to source and deliver the parts you need, when you need them.
Whether you are looking for replacement sensors for your Hitachi excavator, engine components for a heavy truck, or any other type of machinery or vehicle part, Growshine International is here to assist you. Contact us today to learn more about our products and services.
