Audi TT TFSI Engine management Light on after new Cat Etc..

[huester3510]

Hi can anyone assist please, I have a Audi TT TFSI 2010, a few months ago whilst driving home the EPCU , Engine Management light came on car started to splutter and clouds of black smoke came out of the exhaust. RAC came out and diagnosed miss fire on the coil no 4. after this all the other coils were replaced. Then the car continued to break down showing multiple miss fires when diagnosed. It then had a full service fuel mix reset new plugs all new coils new exhaust cat, lamba sensors new plugs again primary secondary ignition checked replaced PCV valve unit.

After all this having just picked it up engine management light has come back on 2 miles from garage! Anyone ideas?

[Andy OH]

Take it back to the garage for them to sort out. Have you used an Audi independent, Audi themselves or just a garage?

[huester3510]

Audi independent. Its being taken back tonight.