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troubleshooting P0491 and P0492 troubleshooting P0491 and P0492
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Old 06-19-2010, 12:33 PM
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troubleshooting P0491 and P0492
Just had Autozone computer check my 2001 X5 and came out with these 2 codes. They had to cross-reference, because the OEM brand spit out Volkswagen. The explanation was damaged air system components. Probable cause was a faulty air solenoid valve or faulty air system relay. Another cause could be a vacuum hose off or leaking, or damaged. How reliable is this check, and what should be my next move? Thanks
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