Quote:
Originally Posted by TZ693
Pick up this old thread.
Recently I got a CPO 2011 535iX. Yesterday the check engine light came on and threw a P0456 code on OBD scanner. I did some search and came cross this thread that seems to be similar issue. I took ithe car in service today. after 2 hrs wait. They told me the comupter triggered a fault alarm and they reprogrammed the computer. Does this sound right? I wonder how's your fix so far? Thx.
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Sometimes it does trigger a false alarm so I wouldn't worry about it until it trips again. If it does, then it's either you got a leak, bad sensor or your ECU needs to be replaced. Demand a fix since you're covered.