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P1421 Diagnostic Trouble Code Discussion for April 2005

Cold Start Emission Reduction Strategy Monitoring

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Trouble Ticket Help Requests for DTC P1421
Help Request Posted
1996 BMW 328i 2.8L MIL Lamp on VIN: WBABK8329T
P1421: secondary air injectionbank1. help!!! after resolving a number of obvious air injection related concerns, i now have an air pump that actually operates, but still have codes for same! mitchell has a sketchy description of the problem, and no real diagnostic routine. am i missing someting s...
April 14, 2005