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P1406 Diagnostic Trouble Code Discussion for November 2008

EGR Valve Pintle Position Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1406
Help Request Posted
1997 Ford E-350 Econoline 5.4L MIL Lamp on VIN: 1FBJS31L5V
P1406: dpfe upstream hose plugged disconnected. Vehicle passes KOER test but sets CODE P1406 when driven on highway.Checked DPFE hoses,both connected & no kinks or blockages,both utbes on EGR tube are open and I get pressure on both w/engine running. If I open the egr valve I get vacume @ the downstream...
November 14, 2008