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P1423 Diagnostic Trouble Code Discussion for July 2007

Fuel Tank Large Leak

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Trouble Ticket Help Requests for DTC P1423
Help Request Posted
2000 Volkswagen Passat 4 Motion 2.8L MIL Lamp on VIN: WVWUH23B9Y
P1423: secondary air insufficient flow. ... that code p1423 keeps coming back. air pump, vacuum lines, solenoids, air lines, and combination valves all check out. my question: has anyone seen a problem with restrictions in the heads by the exhaust manifolds. if there is a common area partially block...
July 20, 2007