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P1400 Diagnostic Trouble Code Discussion for February 2015

Cold Start Emission Reduction Control System


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Trouble Ticket Help Requests for DTC P1400
Help Request Posted
2008 Cadillac DTS 4.6L MIL Lamp on VIN: 1G6KD57Y68
P1400: Cold start emission reduction control system. Have not found much diagnostic information on this code. Checked EGR for being partially stuck open but could blow from exhaust side and pintle sealing tightly/no air.
February 16, 2015