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P1421 Diagnostic Trouble Code Discussion for September 2011

Cold Start Emission Reduction Strategy Monitoring


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Trouble Ticket Help Requests for DTC P1421
Help Request Posted
2002 Audi A4 Quattro Avant 1.8L Surge, MIL Lamp on VIN: WAUVC58E02
P1421: Shrt to grd secondary air injection valve. Vehicle cutting out while customer was driving on the highway.dropped it off to shop after hrs.after we ran the vehicle in the shop and scanned the vehicle we found the wiring to the mass air flow and the other wires in that loom were melted together, with one...
September 21, 2011
2002 Audi A4 Quattro Avant 1.8L Surge, MIL Lamp on VIN: WAUVC58E02
P1421: Shrt to grd secondary air injection valve. Vehicle cutting out while customer was driving on the highway.dropped it off to shop after hrs.after we ran the vehicle in the shop and scanned the vehicle we found the wiring to the mass air flow and the other wires in that loom were melted together, with one...
September 21, 2011