CES light on for 2k miles....E38

[ukzz4iroc]

Hey all,

My E38, 728 has had this f-ing service engine light on for ages. Got myself a code reader and it is showing Po170 fuel trim malfunction and Po173 fuel trim mal. Bank 2.

Cleared codes, they come back- first the 170 and then the 173. Car runs perfectly, averaging 28mpg. Do I just carry on regardless until I get my bushes done or take her in?

Have cleaned MAF sensor properly with proper CRC cleaner but the light comes back.

Was wondering if many BM owners have similar tales of high mileages with no issues. Any advice?

Thanks