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P1421 Diagnostic Trouble Code Discussion for May 2007

Cold Start Emission Reduction Strategy Monitoring


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Trouble Ticket Help Requests for DTC P1421
Help Request Posted
2000 Volkswagen Beetle GLS 2.0L MIL Lamp on VIN: 3VWCC21C8Y
... beetle with no driveability concerns except for MIL on. The codes are P1225 - P1228 , P1451 Secondary Air injection short or ground open, P1421 Sec Air Injection Control Valve, P1425 Tank Vent Valve Short or open, and P1472 EVAP Emission Control System. I ...
May 03, 2007