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    bmw 318 51 reg eng code n42 b20 Archived Message

    Posted by jamie lambert on March 4, 2008, 8:47 pm

    Hi guys
    The above vehicle is my own having a bit of bother with it. Serviced the vehicle few months back didnt clean the throttle body, not long after it started erratic idling. I then tryed cleaning the throttle body and cleared the adaptions. It was o.k for a while but now its doing the same with 2 fault codes stored. The fault codes are
    272d additive mixture adaption, bank 2 control limited reached.
    272c additive mixture adaption, bank 1 control limited reached.
    When idling and on the gas analyser the gases are as follows.
    co=0.00% hc=146ppm co2=10.60% o2=6.85%
    lambda=1.435
    When fast idling the gases come down so it would pass an m.o.t test sorry didnt take any readings.
    Can anyone give me some advice please as im not getting very far with it.

    Regards Jamie.

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