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Fault Code P1337 P1338 P1339 P1340 Fix

We recently worked on a customers Peugeot 308 which was running really rough, the engine management light was illuminated on the dashboard and the message centre displayed the message 'depollution system faulty'.

We used the Autel MD802 DS to diagnose the fault which showed the trouble code P1337 which indicates a misfire in cylinder 1. The video below shows us diagnosing the fault, repairing the fault and clearing the diagnostic trouble code with the scanner. The procedure will be the same for trouble codes P1338, P1339 & P1340 as they each relate to cylinders 2, 3 & 4.

To repair the fault we actually replaced the ignition coil in cylinder 1 which fixed the vehicle straight away and in all honesty we would say this is a 10 minute job, so do not be afraid to give this one a try, the replacement ignition coild should set you back around £20 from your local parts store.
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