2007 207 GTi Fault Code P2191 and P0171
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Thread: 2007 207 GTi Fault Code P2191 and P0171

  1. #1
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    Default 2007 207 GTi Fault Code P2191 and P0171

    Hi Guys,

    Has anyone encountered these fault codes P2191 and P0171? From the reading i've done it appears to be related to a 'depollution fault'. Some of the fixes tried includes replacing the lambda sensor to the timing chain/tensioner, sprockets etc.

    I bought the car second hand and it has only done 50,000Ks. It hasn't had the timing chain/tensioner replaced before and I understand a common problem with the THP engines has been stretching of the chain.

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    Has anyone had this problem and resolved it, if so how and at what cost?

    Thanks.

  2. #2
    Fellow Frogger! Dijon16's Avatar
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    Had to find the codes myself recently, different ones from that but for the same model, came up with about 20 links.

    I printed them out, those particular ones look to be "mixture regulation fault", but I cannot find the link that had them listed, so the line spacing may be a little bit out on the printout and they could be for the fault above or below.

    You really can't do much until you get them verified, other than spend hours searching on the interweb like I did.

    Chris

  3. #3
    sans witticism SLC206's Avatar
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    Yes, they are both "Mixture regulation fault: mixture too lean".

    Got this from somewhere or other: THP specific fault codes.pdf
    addo likes this.
    Regards,

    Simon

    2018 308 GTi 2011 DS3 DSport
    ----
    2014 208 GTi 2007 207 GTi 2004 206 GTi180 2000 206 GTi 1995 306 XT

    www.peugeotclub.asn.au

  4. #4
    Contented Peugeot Driver addo's Avatar
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    An example of where the machine stops and the brain starts. Vacuum leak? Cam phasing? Fuel pressure? Sensor fault?

    The next step is to look at live parameters to see whether everything appears to be within spec.

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