A3 emissions control system
Discussion
Sounds like a faulty coilpack(s). Very common on VAG petrol cars. Connect to VCDS to find out which cylinder is misfiring or disconnect each one in turn to find out which is faulty. A new one vosts about £30 from TPS or dealer. ECP do cheaper Beru ones but I would stick to the OEM Bosch.
Emissons light is on because the lambda probe has detected the fuel/air mixture has not been burnt.
Emissons light is on because the lambda probe has detected the fuel/air mixture has not been burnt.
Edited by cuprabob on Monday 21st July 00:40
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