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Guys, I'm sorry to bother you with these kind of trivial stuff but I need to ask because I haven't seen a specific answer to this. My question is how is the procedure for erasing codes on Mk2 Focus 1.6 TDCi. Does the engine need to be on or just ignition on and what do I do after I've cleared the codes - do I turn it off or start it after clearing? If anyone can post a short step by step guide I'd be very, very grateful. You're probably thinking I'm being too cautious but as it is my first time I'd like to do it properly. Cheers, take care.
Always engine off usually and ignition on for clearing fault codes it should prompt you what to do if it doesn't erase your codes disconnect diagnostic from vehicle switch ignition off for 10 secs and then back on and reconnect diagnostic programme that's normally what I do.