Pressure regulation
â–¶ How to fix
Check the compressor solenoid valve using the diagnostics program. Check the compressed air pipes between the APS and compressor. Check the compressor. Renew defective components. Erase the fault code.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The air pressure increases when the control unit has switched off the compressor.
Possible cause
Electrical or mechanical fault in the control unit, compressor or solenoid valve. The fault may also be caused by leaks in the pneumatic signal pipe between the APS and compressor.