The error codes seem consistent with a fuel delivery problem if the engine is unmodified. If the ECU is trying to compensate for low fuel pressure then it would max out the fuel injection time at some point.

The electrical gremlins might be a sign that the turn signal unit is expiring. Its a common problem, there are threads about it here.

Last edited by JohnMat; 07/04/26 07:46 PM.
2020 M3W