Description:

This fault code is triggered when the Chassis Control Unit (CCU) detects that the hydraulic oil temperature sensor circuit is open, leading to a high voltage condition. Additionally, it may also occur under specific conditions related to engine speed, hydraulic oil temperature, and engine coolant temperature.

Reaction:

The function of the hydraulic system is degraded to prevent unsafe operation due to unreliable temperature readings.

Recommendations:

• Inspect Sensor Circuit: Check the hydraulic oil temperature sensor circuit for any signs of damage, corrosion, or loose connections that could cause an open circuit. Repair or replace components as necessary.
• Check Sensor Wiring: Verify that the wiring harness connected to the sensor is intact and properly connected to the CCU. Repair any damaged wires or connectors.
• Address Engine Speed and Temperature Conditions: Investigate the specific conditions under which the fault occurs, such as engine speed, hydraulic oil temperature, and engine coolant temperature. Address any discrepancies to prevent false fault triggers.
• Reset and Retest: After addressing the underlying issues, reset the CCU and perform tests to ensure that the fault code does not recur under normal operating conditions.

Note:

Ensuring the integrity of the hydraulic oil temperature sensor circuit is crucial for accurate temperature monitoring and safe operation of hydraulic systems.