× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P0400 Diagnostic Trouble Code Discussion for October 2007

Exhaust Gas Recirculation System Flow Malfunction

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0400
Help Request Posted
1996 Geo Tracker 1.6L MIL Lamp on VIN: 2CNBJ1862T
P0400: EGR System Performance. Have re-occuring p0400 for egr flow issue. Transducer and bypass vac solenoid are new. Other vac control solenoid is not new, but does function properly ( cuts vac to transducer P port ). Lift valve manually, stalls eng @ idle. Turn egr on w/ scanner, stalls e...
October 11, 2007