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P0401 Diagnostic Trouble Code Discussion for July 2013

Insufficient EGR Flow Detected

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Trouble Ticket Help Requests for DTC P0401
Help Request Posted
1997 Mercury Mountaineer 5.0L MIL Lamp on VIN: 4M2DU55P0V
P0401: Egr flow insuficient detected. Ford techs help! where is the dpfe sensor on this 5.0? alldata says it has one ford sold me one per vin. But i sure cant find it. This is the old 5.0 with the huge plenum. The egr system consists of a egr valve egr valve position sensor and a sol valve. I dont...
July 17, 2013