BMW 2002 325CI Code P0491 and P0492
tlijun
01-15-2021, 06:25 PM
BMW 2002 325 CI failed emission test for code P0491 and P0492. Air pumper started when cold. There was air blow out, and it shut off after 30-60 seconds. Its vacuum line looks good. Does anyone knows what else to check? Any suggestion will be great help!
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