Good Evening!
I started getting the P0171 and P0174, and P0460. After having my valve cover gaskets replaced, I cleared the codes, drove it for a while and the P0171 and P0174 did not come back. Instead, I received the P0420, P0430 and P0460. I cleared the codes. After driving it for a while and now the P0171, P0174 and P0460 came back, but not the P0420 and P0430. My mechanic did do a smoke test and we saw smoke appearing on the side where the intake is. Not sure if the issue is with intake gaskets or DISA valve. Also considered the fact that the O2 sensors have never been replaced by me. I would appreciate advice regarding this matter.
Concerning the P0460, I have already replaced the fuel pump and the fuel level sensor/sending unit under the back seat on the driver's side. Thinking there could be a wire connection issue. Please advise.
https://www.bimmerforums.com/forum/s...UESTIONS-FORUM!
The BMW Employee and Tech Talk forum is no mechanical questions forum, that is why we have the sticky there!
Moved to the right subforum
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