Supply pressure for compressed air
â–¶ How to fix
Check and rectify the primary cause of the fault in the APS control unit. If the vehicle is not equipped with an APS control unit, the coordinator will carry out its function. If this is the case, check and rectify the primary cause of the fault in the coordinator.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
There has been a fault in the supply pressure signal.
Possible cause
A fault has occurred in the APS control unit.