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P0400 Diagnostic Trouble Code Discussion for October 2008

Exhaust Gas Recirculation System Flow Malfunction

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Trouble Ticket Help Requests for DTC P0400
Help Request Posted
1996 Geo Tracker 1.6L MIL Lamp on VIN: 2CNBJ1366T
P0400: EGR System Performance. ... for a long time now. First came in about 6 months ago for a MIL, P0400. Followed pinpoint tests and found egr pressure transducer to be a problem but also suspected the egr valve to be a problem due to the pintle sticking slightly. Replaced both components...
October 20, 2008