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P0492 Diagnostic Trouble Code Discussion for August 2006

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Trouble Ticket Help Requests for DTC P0492
Help Request Posted
2001 Volkswagen Passat GLX 4 Motion 2.8L MIL Lamp on VIN: WVWTH63B11
P0492: secondary air inj bank 2 low. the dealer says the only common part for replacement is the pump itself, it seems that if the pump was the cause it would set codes for both banks. both secondary air valves work smooth with no carbon build up. possible carbon built up in heads or manifolds bu...
August 25, 2006