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P0400 Diagnostic Trouble Code Discussion for April 2014

Exhaust Gas Recirculation System Flow Malfunction

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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