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P1421 Diagnostic Trouble Code Discussion for August 2009

Cold Start Emission Reduction Strategy Monitoring

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Trouble Ticket Help Requests for DTC P1421
Help Request Posted
1997 BMW 528i 2.8L MIL Lamp on VIN: WBADD523XV
P1421: Secondary Air Pump. Anyone got any idea with these code P1421 and P1423. I checked on all data and it doesn't really give me much information. The Air Pump, I checked it works and wonder if anyone run into this problem before so please let me know. Thanks
August 19, 2009