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Audi a4 b8 2.0 tfsi fault codes for o2 sensors after new timing chain fitted


paul fisher
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well had the timing chain and head rebuilt after the timing chain failed

got the call to pick up my car when i arrived at the garage the mechanic told me the eml light has come on due to the o2 sensors going bad 

so I've changed both o2 sensors for new genuine bosh sensors and the fault codes are still there can anybody shed any light on my problem please 

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Hi did the mechanic tell you when you fit the new sensor you have to do the adaptations after clearing the fault codes the clue is in the fault frequency and not confirmed, tested since memory CLEAR, put the codes to bed and do the sensor adaptations I am pretty sure it will be fine.

Steve.

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