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P0400 Diagnostic Trouble Code Discussion for November 2012

Exhaust Gas Recirculation System Flow Malfunction

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Trouble Ticket Help Requests for DTC P0400
Help Request Posted
2000 Mitsubishi Montero Sport LS 3.0L Unknown VIN: JA4LS31H3Y
P0400: Exhaust Gas Recirculation System Flow Malfunction. When driving this vehicle at cruise, in my case @40 - 45 mph level road, it starts to slow down as if you let off accelerator. Tach starts to drop slowly consistant with the speed drop. Maintaining accel. Pedal position this drop will continue. The slightest i...
November 29, 2012