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P1408 Diagnostic Trouble Code Discussion for November 2014

Manifold Absolute Pressure Sensor Signal Performance

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Trouble Ticket Help Requests for DTC P1408
Help Request Posted
1997 Ford Econoline Super Duty Custom 6.8L Poor Idle Quality, Hesitation VIN: 1FDLE47S8V
P1408: Egr flow out of range. ... It had a p0401 code when it came in. I scanned the data and saw the dpfe sensor was at 1.9 which is out of range. They should be around 1.0 volt. I replaced the dpfe sensor and the egr valve. The truck was gone about a week and came back with a p1408 code ...
November 03, 2014