Shop did unwanted "diagnostic", now unclearable codes

[boostE92d]

I have a 12 335is with some issues.

I got my car back after having serpentine belt and pullies replaced, and now I have a limp mode that can't be cleared out. The car was mhd tuned, as in 2min. flash, when I dropped it off. When I went to pick it up they told me that I had a check engine light, and they needed $300 to start trying to figure it out. I declined.

My invoice showed that they charged me to do some kind of vaguely worded work involving the obd2 port. I didn't ok the work, and it cost hundreds.

I went to clear the codes and it didn't work. Then I went to see if maybe reflashing the tune would help. That required a full flash. I haven't had to do that in literally years.

I took it to a bmw service writer I've become friendly with, and his tech wouldn't touch it with the tune on. I tried to flash back to stock, and it failed multiple times.

I called ABR Houston, and they said the same thing as BMW. It could be that files in the dme could have been corrupted.

Is there a way to fix it with MHD? The car runs still, but I don't know what to do next. Any help would be appreciated.

 

[JohnDaviz]

I don´t know if i can help you.. but it would have been a better start if you actually had posted the error code.

 

[boostE92d]

I don´t know if i can help you.. but it would have been a better start if you actually had posted the error code.

2abc boost pressure sensor
2f13charge air temp sensor
3100 boost control deactivated
Shadow code- 2fa3 dme: no coding

The problem is that the codes are unclearable and the car won't allow me to flash back to stock.

 

[boostE92d]

ABR and BMW didn't want to commit to anything over the phone. They both did say it was a bad idea for that shop to have done anything dme related while I had it tuned.