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Old 06-11-2013, 05:54 PM
Bluefin13 Bluefin13 is offline
Registered User
Location: Tucson
Join Date: Mar 2013
Posts: 36
Mein Auto: 325E & X5
Calling all code readers

01 X5 keeps showing PO491 and PO492. Secondary air injection system bank 1 and 2. I cleaned the Maf and Mas. What does this mean? I searched and found no cure. anyone decipher? Major or minor problems?
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