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P0400 Diagnostic Trouble Code Discussion for September 2011

Exhaust Gas Recirculation System Flow Malfunction

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Trouble Ticket Help Requests for DTC P0400
Help Request Posted
1997 Subaru Legacy GT 2.5L MIL Lamp on VIN: 4S3BG6859V
P0400: Insufficient EGR System Flow Detected. ... every month or so. It is operated in a typical drive cycle of ten miles with speed)50mph a few times a week. Usually it makes short trips (3mi or less)under 40 mph. Every so often the customer has reported a check engine light. The only code is a p0400 egr...
September 20, 2011
1997 Suzuki Sidekick JA 1.6L EGR Flow VIN: 2S3TD03V4V
P0400: EGR System Fault Too Much Or Too EGR Little Flow). Vehicle came in with PO400 (Exhaust Gas Recirculation) stored in computer memory.I tested vacuum hoses,EGR valve,EGR pressure transducer,EGR solenoid vacuum valve, and EGR solenoid vacuum valve(for system check)O.K. I then test drove vehicle with vacuum gauge ...
September 26, 2011