Lambda control tolerance bank 2, deviation rich has come back. Worked fine few month after getting original maf and just last week started to throw that code again. Since pretty much everything is new or repaired in the intake side... Is it the lambda itself?

It can work fine for days without CEL and then suddenly throws the light and code.

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Current rides: E65 730d, F10 520d, E34 520i


BMW glasses on since 2004.