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P1421 Diagnostic Trouble Code Discussion for January 2005

Cold Start Emission Reduction Strategy Monitoring

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Trouble Ticket Help Requests for DTC P1421
Help Request Posted
1998 BMW 328i 2.8L MIL Lamp on VIN: WBABK8325W
P1421: unknown. ... convertible that came in with an mil on and the codes p1421 & p1423. I talked with a few other shops and could not find a description and since the car had no driveability problems we agreed with the customer to clear the codes and let him drive it. Af...
January 17, 2005