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My wife's peugeot 207 cc is showing "depollution system faulty" and the engine management light comes on but this only when the roof down, also seems to be missing on a cylinder ????

I also borrowed a code reader from a work mate after the first time this happened (by this time the engine management light had gone off) and it gave a P1337 as the fault code when the roof is down. There is a noticeable loss of power which makes me think there is a misfire

The car is 2009 16 16v 120bhp

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    Is there any additional information you can provide? Year of the car is important. Why do you think it's misfiring on a cylinder? The information on why you think it's misfiring is relevant information to add to your question. Thanks. – DucatiKiller Apr 9 '16 at 15:43
  • Which exact OBDII codes are given by the vehicle computer when this happens? – Pᴀᴜʟsᴛᴇʀ2 Apr 9 '16 at 17:13
  • Hi i borrowed a code reader from a work mate after the first time this happened (by this time the engine management light had gone off) and it gave p1337 as the fault code when the roof is down there is a noticeable loss of power which makes me think there is a misfire the is 2009 16 16v 120bhp – simon Apr 10 '16 at 14:51
  • p1337 although the engine management light had gone off by itself when i had use of the code reader – simon Apr 10 '16 at 14:56
  • When you say the light comes on when the roof is down, do you mean it comes on when DRIVING with the roof down, or do you mean the error appears as soon as you take the roof down? If the former it could be a marginal component that's failing due to additional drag from driving with the top down. If the latter, it could be a wiring problem. – barbecue Apr 10 '16 at 20:10

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