Mechanics

F150 EGR CODE P0401

1999 Ford F-150

Engine Mechanical problem
1999 Ford F150 6 cyl Two Wheel Drive Automatic 105000 miles

CHECK ENGINE LIGHT SHOWS CODE.P0401. JUST BEFORE THE EGR VALVE, IS A (?) PRESSURE SENSOR, WHAT ARE THE ODDS THAT THIS NEEDS REPLACING? THANKS, BEANS
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WM. COGGESHALL
July 6, 2008.




There is a seperate code for the sensor. Take the EGR Valve off and Clean it.

Code Definition

P0401 Exhaust Gas Recirculation Flow Insufficient Detected.

Obxautomedic
Jul 7, 2008.
Also alot of times I find that sensor, dpfe fails alot too if cleaning the egr doesnt work. They have updated the part from the metal one to now a plastic one.
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Tiny
Mastertechtim
Jul 7, 2008.

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