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