Description:

This diagnostic trouble code is triggered if the hotkey for auxiliary hydraulic control remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as “actuated” for more than 10 minutes during operation. Auxiliary hydraulic controls are vital for managing additional hydraulic functions beyond primary SCVs.

Reaction:

If the hotkey for auxiliary hydraulic control remains actuated beyond the specified durations, the control unit may disable the functionality associated with auxiliary hydraulic control to prevent unintentional or unsafe operations. This can affect the management of additional hydraulic functions, potentially impacting operational efficiency.

Recommendations:

• Inspect Hotkey Mechanism: Examine the physical condition of the auxiliary hydraulic control hotkey for signs of sticking, damage, or wear that could cause it to remain actuated.
• Test Hotkey Functionality: Use diagnostic tools to verify the proper operation of the auxiliary hydraulic control hotkey. Ensure it accurately registers presses and releases.
• Check Electrical Connections: Inspect the electrical connections to the auxiliary hydraulic control hotkey to ensure they are secure and free from corrosion or damage.
• Update Control Software: Ensure that the control unit software is up-to-date, as updates may include fixes or improvements for hotkey management.
• Replace Faulty Components: If the hotkey or its associated wiring and connectors are faulty, replace them with new or known-good parts.
• Perform System Reset: After resolving the issue, reset the control unit to clear the fault code and verify normal hotkey operation through comprehensive testing.

Note:

Ensuring the proper functionality of the auxiliary hydraulic control hotkey is crucial for managing additional hydraulic functions efficiently. Regular inspection and maintenance of the hotkey mechanisms can prevent faults and ensure reliable control inputs.