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P1408 Diagnostic Trouble Code Discussion for January 2008

Manifold Absolute Pressure Sensor Signal Performance

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Trouble Ticket Help Requests for DTC P1408
Help Request Posted
1998 Ford F-150 XL 4.2L MIL Lamp on VIN: 1FTZF1723W
P1408: EGR Position out of self test range. This truck keeps setting a code for insufficient EGR flow. I've done all the basic checks and everything checks out ok. EGR valve almost kills the engine if opened manuelly. I suspected stopped up EGR ports even though there is no evidence to support that. Rem...
January 08, 2008