P1401 - Differential Pressure Feedback EGR sensor ( DPFE ) circuit high voltage detected
Code P1401 means:Differential pressure feedback electronic sensor circuit high voltage
P1401 is DPFE sensor circuit high, check out this tutorial to replace the sensor on your Ford
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Trouble code P1401 means: DPF EGR sensor circuit high voltage detected
insufficient egr flow
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The P stands for the Powertrain. The 1 stands for Manufacturer specific. The 4 stands for Auxillary Emmission Control System. The final 0 & 1 ( as 01) identifies the section of the system that is malfuntioning.