Join Now
International Automotive Technicians Network

P0400 Diagnostic Trouble Code Discussion for April 2014

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
1999 Volkswagen EuroVan GLS 2.8L Poor Idle Quality VIN: WV2KH2702X
P0400: EGR Low Flow. Van came in with CEL illuminated P0400- Low EGR Flow. engine runs fine, only light is on. Found cracked/broken vac line from EGR valve to egr vac solenoid, replaced it. Egr vac solenoid tested good electrically but was clogged with carbon and/or oil sludge. I ...
April 29, 2014