CEL Hell

[NotEntirelyJack]

Hey guys,

I have had persistent problems with my CEL on my 2010 x5 35d. It seems to come on all the time. Since I got the car last December the light was going on and off. I took the car for service in August and they diagnosed an exhaust pressure sensor failure. However after this the light came on intermittently. I brought the car back to service in December. At that time they determined that the coding in DSC and VTG was incorrect. This is what the service reciept says:
coding in DSC and VTG incorrect. Performed Short test. Multiple coding faults stored. Ran test B2460 GSEGS L4. Coding necessary. GW 122642519 DIAG D2460 AZ6TU000 90 201 Steering column calibration B3243
calibrated camera AS6653 TRSVE7X

When I went to pick the car up after the above service the CEL was on. I didnt even make it into drive. So I left the car and then they said that there was a failure of the exhaust differential pressure sensor. I think is what they replaced the first time. Well 2 days ago the light came on again.

Anyone have any idea of what is going on? Any idea on how to fix it?

Its really driving me crazy and I am starting to feel like I am back in my old A4 where my service advisor knew me personally because I was there so often.