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P1400 Diagnostic Trouble Code Discussion for August 2009

Cold Start Emission Reduction Control System

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Trouble Ticket Help Requests for DTC P1400
Help Request Posted
2007 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: 1GNDS13S97
P1400: Cold Start Emission Reduction Control System. Has anyone seen this code before? Mitchell's discription isn't very clear and there isn't a good test procedure. I have checked for PCM updates related to this code and there aren't any. Any help would be appriciated.
August 12, 2009