Description:

This diagnostic trouble code is generated when the filter bypass valve (for cold-weather starting) is closed under the following conditions: Transmission input speed (engine speed) is above 1400 rpm and transmission oil temperature is below -5°C (23°F); engine is off. The diagnostic trouble code triggers the alarm level: Information.

Reaction:

Warning remains active until the fault is corrected, indicating a non-critical issue with the filter bypass valve.

Recommendations:

Inspect Filter Bypass Valve:

• Verify that the filter bypass valve is functioning correctly.
• Replace the valve if it is faulty.

Check Pressure Switch:

• Ensure that the pressure switch is operating correctly.
• Repair or replace the pressure switch if necessary.

Examine Wiring and Connectors:

• Inspect all wiring and connectors associated with the filter bypass valve and pressure switch for signs of damage or disconnection.
• Repair or replace any damaged components to ensure proper electrical connections.

Verify Operating Conditions:

• Ensure that the vehicle is not operating under conditions that could inadvertently trigger this fault (e.g., extreme cold temperatures).

Consult Technical Support:

• If the issue persists, consult technical support or the manufacturer for further diagnosis and assistance.

Note:

Proper functionality of the filter bypass valve is important for vehicle operation, especially in cold weather. Regular inspection and maintenance can help prevent these issues.