DTC C1A13-64: Pressure Does Not Decrease When Venting Gallery - Signal plausibility failure: Action
- Check the reservoir pipes and the front and rear valve block pipes for correct routing and installation. Repair/renew as required, clear DTC and retest
- Refer to the approved diagnostic system for corner, reservoir and exhaust valve checks. Check the corner valve for leaks. Repair/renew as required, clear DTC and retest
- Refer to the applicable SYSTEM WIRING DIAGRAM(S) and check the air suspension compressor exhaust valve circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair circuit as required, clear DTC and retest
- Check the air suspension compressor exhaust silencer/exhaust pipe for blockages/restrictions. Repair as required, clear DTC and retest
- If fault persists, check and install new air suspension air pressure sensor as required