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P0400 Diagnostic Trouble Code Discussion for January 2007

Exhaust Gas Recirculation System Flow Malfunction

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Trouble Ticket Help Requests for DTC P0400
Help Request Posted
1997 Mazda Protege DX 1.5L Poor Idle Quality, Stall, MIL Lamp on VIN: JM1BC1414V
P0400: EGR System Flow Malfunction. hello everyone, need some help w/this mazda. came into the shop as a rough idle & stall espically when warm. once @ operating temp idle hunts up & down between 300-800rpm (give or take)& most of the time stays running but sometimes stalls. when veh...
January 17, 2007
1998 Mazda Millenia 2.5L Excessive Emissions, MIL Lamp on VIN: JM1TA2219W
P0400: EGR System Flow Malfunction. ... mellenia with MIL on, DTC P0400 insuficient flow detected, EGR. When I activated EGR at idle , I had no difference in RPM. I then removed EGR and cleaned. It was stuck. I reset the MIL and road tested car to get readiness stat...
January 19, 2007
1997 Mazda MX-6 LS 2.5L MIL Lamp on VIN: 1YVGE31D6V
P0400: EGR System Flow Malfunction. hi, everyone code po400 still returns after i made repairs. this vehicle has two solenoids that control egr function thay are hard to get to my gess is one of them is bad? any help would be great!
January 25, 2007