I bought used 2016 BMW 318i about 10 months ago. Recently it just lost power and gave me drivetrain error. Got it scanned the errors 123422, 104402, 120408 and 128104. Error 104402 (intake-manifold sensor) and 128104 (O2 sensor before catalyst convertor) have been there for sometime, I think more than 5 months but with no loss of power or drivetrain error. After the drivetrain error then there were 2 new errors 123422 (electric westgate adaptation: start position closed not detected) and 120408( charging pressure control: switch off as consequence). Turbo was re-conditioned 6 months ago. What could be the problem. I also replaced MAP sensor nothing changed and also cleaned O2 sensor nothing changed. I also changed rail fuel pressure sensor. I am afraid to break the bank replacing all the sensors. What could be the problem.
Welcome to the Forum!
Please write out each code word for word.
Just looking at the codes you do have with a description, it seems a boost pipe is loose or busted. There maybe more issues or problems but none of us have those codes memorized.
Darin
Current:
16 220i Active Tourer Platinsilver MET (C08)/Dakota Black (PDSW), P7ACA, P7LDA, P7LHA, P9BDA, 6sp Manual - Wife's new toy!
05 325it Electric Red(438)/Gray(N6TT) ZCW, ZSP 5sp Manual Back set cover, trunk mat, Euro Infra-Rot front windshield, and mud flaps! Mr. Wagon My new Winter car.
05 M3 Imolarot II(405)/Gray(N5TT) ZCW, ZPP 6sp Manual C.F. Lip, CSL diffuser, SSK, Euro Infra-Rot front windshield and a trunk liner! Mr. Go_Fast Stored for the Winter
Past:
95 318is Montreal Blue Met (297)/Beige(K1SN) RIP, killed by an Idiot.
84 M535i gray market Burgandy Rot Met/Black Leather Lowered by Intrax on bilies, poly everywhere, B&B cat back system, K&N, and a hitch! Da Beast - Still running w/400k+!
91 316i euro Tizianrot/Gray cloth - E-36 w/M-40 RIP, but great on gas! Best was 38 MPG
82 528i euro Saphire Blue Met/Blue Leather RIP
79 525 euro Green/Green RIP
79 318 Silver/Black - The first one that got it all started
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