Re: CEL light on... the elusive P1188 and P1189 myster
i know this is an old post but I just was curious if you ever cleared the codes and what was it you did.
I'm getting the same P1188 and P1189 codes on my '00 528i with similar -100.6% trim levels you listed. Pre-cat O2 sensors, CCV and hoses replaced and MAF cleaned.
Any help is greatly appreciated.