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khaitan

A8 check engine light is coming on.

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Hi Everybody, nice to see Dubai based Audi Owners community.

Need little help from you guys, that since 2 days my Audi A8 showing and going off check engine light. Car is always serviced regularly and no other problem has been so far.

Car drives well, checked engine oil and other stuff from engine bay and everything looks great.

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Mostly it is CO sensor (Exhaust sensor) you may replace it and it will even reflect in fuel consumption but you must check engine ECU diagnostic trouble code (DTC) to be sure other than that sometimes it is ignition coils and the sensor is just indicating to misfire or multi misfire.

Good Luck

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During what times does the check light come on and off? Does it happen constantly or only when you are driving?

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Got the diagnostic done, none precise fault found but something pointing to air filter being old and might be choking the air intake. So mechanic changed that 2 days back and no check engine light so far. Yet to confirm 100% after sometime. Thanks Saleem and Raven for all your help and advises. Cheers.

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