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P0400 Diagnostic Trouble Code Discussion for July 2007

Exhaust Gas Recirculation System Flow Malfunction

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Trouble Ticket Help Requests for DTC P0400
Help Request Posted
1999 Nissan Maxima GLE 3.0L MIL Lamp on VIN: JN1CA21D7X
P0400: EGR System Recirculation Flow. Hi folks. PO400 still appearing after egr valve, egr air temp sensor replaced. EGR lines also checked for blockage. Mitchell tells me there is an egr volume control valve that is operated electronically. Is this component integral w/ the egr valve?? Could use ...
July 05, 2007
1996 Suzuki X-90 1.6L MIL Lamp on VIN: JS3LB11S1T
P0400: EGR System Fault Too Much Or Too EGR Little Flow). P0400 was the only code in the memory. We followed the test procedure from Alldata for this code. All tests showed proper operation of the system. There was only one of these in the archives and the definite fix is unknown. After spending a good amount of time...
July 05, 2007
1999 Nissan Maxima GLE 3.0L MIL Lamp on, HARD START VIN: JN1CA21A8X
P0400: EGR System Recirculation Flow. ... Customer stated that CEL has been on for some time. Without warning, had trouble starting cold engine. Stated that he had to use the accelerator to get it to start, and ran rough (seemed flooded) for about 30 seconds. Car comes to me- runs fine- MIL on. Co...
July 16, 2007