P1421 Diagnostic Trouble Code Discussion for September 2011
Cold Start Emission Reduction Strategy Monitoring
Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.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 |
