Possible Causes
- Signal plausibility failure
- Axle valve block pipes connected incorrectly
- Pneumatic parts disconnected while system active
- Corner valve stuck open (mechanically)
- Air suspension air pressure sensor circuit - Short circuit to ground, short circuit to power, short circuit to another circuit, open circuit, high resistance
- Air suspension air pressure sensor fault (calibration drift)
- Pressure gallery leak
- Exhaust valve fault
- Air suspension air pressure sensor failure