Description:

This diagnostic trouble code is generated when the PLC control unit detects a voltage of more than 5.4 volts at the positive power supply lead for the park lock pressure sensor (B90). This indicates a short to a supply lead somewhere in the circuit.

Reaction:

The park lock pressure sensor may provide inaccurate readings, potentially affecting the park lock system’s ability to function correctly.

Recommendations:

• Inspect Wiring and Connections:
  • Check for any signs of damage, corrosion, or loose connections in the wiring to the B90 park lock pressure sensor. Repair or replace as necessary.
• Check for Shorts to Supply Lead:
  • Inspect the circuit for any shorts to a supply lead and address any issues found.
• Test the Sensor:
  • Verify the functionality of the B90 park lock pressure sensor. Replace if faulty.
• Secure Connections:
  • Ensure all connections are secure and free from contamination.

Note:

Maintaining clean and secure connections is crucial to prevent high voltage issues in sensor circuits. Regular inspections can help identify and address potential problems before they lead to faults.