My Wabco air suspension threw "Suspension faulty" last week and the car was tilting in the back so I decided to see what it was all about.

I started leaktesting and found rapidly that the pump/valve assembly was leaking badly, especially on the side that tilted. But over all it was leaking on all ports. I disassembled the compressor head and found that the head gasket had not sealed properly and there was alumium oxide inside the compressor and towards the valve bridge. I guess the alumium dust is what made the valves leak.

Leak testing of the bags and the extra tank showed no leaks at all.

I have now replaced the compressor/valve assembly and powered up the system. But no luck. The pump does not start and still have the "Suspension faulty" error code.

Is there a reset needed for the system to start operating again? If so, how do I go about doing that reset?

Any advice is appreciated. Cheers from Sweden!

Alright so I have cleared all fault codes and the system is operational again but I have a C119A DTC beeing set by the system.

Does anyone know what the C119A from the pneumatic system means?

The air suspension will likely Bea aftermarket system as it's not as far as I'm aware a factory option from fiat
So it's probably unlikely anyone here has the same system

For info:

https://www.fiatforum.com/ducato/266737-air-suspension-problem.html?266737=#post2730932

chris3234, the rear air suspension was a factory fitted option for the Combinato and can also be found on some of the Jumpy and Expert versions of the chassie. So it's not common but it's out there.


A very similar system can be found on some of the Citroen cars like for instance the C4 Picasso.

varesecrazy, thanks for the link.