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Thread: Really fed up of this now!!!!

  1. #1
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    Default Really fed up of this now!!!!

    Ive been having problems over the past couple of months with my 2003 2.2 SRI (Z22se).
    The problem being a spluttering lack of power when trying to accelerate then all of a sudden it returning, it happens at all kinds of speeds and all different types of driving.
    The engine warning light comes on and shows the codes :
    P0171 - system to lean bank 1
    P0340 - camshaft position sensor a, circuit bank 1 or single sensor

    and on a couple of occasions
    P0137 - 02 sensor circuit low voltage bank 1 sensor 2

    This has happened that many times that ive bought a code reader so i can reset the light myself! After the reset its fine for around 20 miles then it comes back again.

    Can anyone please put it into plain english what all the above codes mean and if possible what the hell is wrong with my car!

    Ive had the local garage look into it and they put a new coil pack,plugs and alternator on which helped for a few weeks but then went back to the old ways as above.

    If anyone can help im all ears!

  2. #2
    Regular Member mattv6diesel's Avatar
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    Vehicle : Bmw 330d

    Trim : Msport

    Engine : 3.0d

    Year : 2008

    Default

    The o2 sensor codes are because it runs lean i.e not enough fuel.
    Camshaft sensor code means for that sec the camshaft sensor miss read or has lost signal.

    Is the chain slack? Or it could be sensor or air flow meter at fault

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