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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 03-31-2007
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p1401

so i changed the egr sensor today and instead of the p401 egr insufficient its p1401...wtf...lol
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p1401 Manufacturer contrl auxiliary emission controls
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Old 03-31-2007
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guess what iam asking is what would cause that code?
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Old 03-31-2007
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It says that the voltage from the DPFE to the PCM is higher than it should ever be. That sounds like either a crossed wire, an open signal return wire or a bad DPFE.
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Old 03-31-2007
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I would check all the vac lines to the EGR and make sure there are no vac leaks
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