Fault Codes:Hitachi ZX110-E 02
Hitachi ZX110-E Fault Code 02: Complete Diagnostic Guide
What is Hitachi ZX110-E Fault Code 02?
Fault Code 02 on the Hitachi ZX110-E indicates an Engine Coolant Temperature (ECT) Sensor Circuit malfunction. This code is triggered when the Engine Control Module (ECM) detects an abnormal voltage signal from the coolant temperature sensor, typically indicating an open circuit, short circuit, or sensor reading outside the acceptable range.
The ECT sensor plays a critical role in the ZX110-E's engine management system by monitoring coolant temperature and sending real-time data to the ECM. This information directly affects fuel injection timing, idle speed control, and engine protection protocols. When this sensor fails or provides inaccurate readings, the engine cannot optimize performance or protect itself from overheating damage, making this a high-priority diagnostic concern for used excavator owners.
Common Symptoms
Fault Description:
RAM anomaly
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