This could be true. Most dealers are updating ECU as these cars come in And will definitely lock your ECU and lose your tune. But it could be something much more simpleIf you took the car to the dealer is it possible that they re-flashed it and erased your tune?
bruh why would you take a car tuned with a catless downpipes into the dealer for a oil change !!! If you have the obd2mx+ should tell you exactly what that code is in the obdlink app for it .Thanks for your replies!!!!
I installed the catless down pipe, and exhaust about a year ago, also had the car tuned with no CEL until now. I took the car to the dealer for the oil change back on July and driven the car about 50 miles since. and just a couple days ago I had the CEL come on.... the code I cannot fid is the P04FC so I was wondering if anyone here knows what that code is for.....
Ahh gotcha , yea my dealer wasnāt too bad they just told me donāt bring it in with the tune once itās done next week or after market mods that way if I have a issue thereās no record of it . I decided to go that route then get the free service lol . The service manager said only thing that wasnāt an issue would be the lowering springs and decoding with bimmercode . I only have 600 miles on mine so far so service is still a ways out for memy warranty was already void, the service manager knew about the updates on the car and we had agree that he will not update my ecu. They were only to do the oil change since all services were included on the car sale price ( only way they will sell the car at the time, I paid msrp plus the services, much better than what other dealers were asking for at the time)
Where was the hose? I just got this code alsothanks.... after looking at it, it happens that a vent hose was disconnected!!!!!