PL1 521979.06 – Keep-Alive Voltage for Park Lock, Current Too High
PL1 521979.06 (PL1 )
Code: 521979.06
Shortcode:
Description:
This diagnostic trouble code is generated when the control software detects excessively high current in the circuit for the keep-alive voltage of the park lock. This indicates a short circuit within the system, leading to driver outputs for gear shifting (DirectDrive transmission) being switched off.
Reaction:
The gear shifting functionality is disabled to prevent further damage due to the short circuit.
Recommendations:
- Inspect Wiring and Connections:
- Check the wiring for any signs of damage, fraying, or short circuits.
- Ensure all connections are secure and free from corrosion.
- Test Circuit Components:
- Verify the components within the keep-alive voltage circuit for faults or short circuits.
- Replace any faulty components to restore proper functionality.
- Check Control Unit:
- Ensure that the control unit is functioning correctly and not contributing to the high current draw.
- Consult Technical Support:
- If the issue persists, seek assistance from technical support to diagnose and resolve the short circuit.
Note:
Regular inspection and maintenance of electrical circuits can help prevent issues related to high current draw and ensure reliable park lock operation.