Adaptive air suspension drop on front

[Sparky85]

Hi
After a bit of advice. 2006 A6 allroad went for mot, needed new front upper suspension pins as were worn. £800 later, within 10 miles of driving it from mot I had flashing yellow and quickly followed by flashing green lights on dash. Pulled over to see the front wheelarch was resting on tires. AA couldn't fix, adaptive air control panel wouldnt do anything, so needed to be recovered back to garage who did mot.
I'm assuming the garage caused some sort of leak to it when they did the mot work, but am not convinced they'll accept that. Any thoughts on whether these are linked, what needed (and how much I should pay) to fix it, and anything else to help my understanding with the garage would be appreciated.

Thanks.

[smiffypr]

My GUESSES: If it was a leak, small enough that it didn't drop immediately, the system would have just pumped it up.
If the height sensor was disconnected, that might cause the system to shut down or do something silly.
So I would suspect the sensor wiring or sensor has been disturbed by the garage.
The easiest way to start any diagnosis is to read out the fault codes.

[Sparky85]

Thanks for the response, much appreciated.
I have the fault codes from the AA and have sent the report to the garage: code OA56 - level control.
Hoping it's something straightforward as you suggest.

[Crasher]

That would be P0A56 but their generic code reader is probaly getting it wrong, it needs deeper work. I HATE air suspension!