Oxygen sensor pre cat ,bank 1? changed but still comes on.
EB trimming, oxygen sensor before catalytic converter bank 1. changed oxygen sensor
and checked for any air leaks, don't have any. still get the service engine light on .what can be causing this ?
Questa è una buona domanda?
@rick24995 what service code do you get hen you scan your BMW? What year and what engine is this?
da oldturkey03
Maybe you have a wiring issue
da Vertinhol