1999 FORD F150 EGR CODE P0401

  • Tiny
  • WM. COGGESHALL
  • 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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Sunday, July 6th, 2008 AT 8:25 AM

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  • Tiny
  • obxautomedic
  • Expert
  • 3,751 posts

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.

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Monday, July 7th, 2008 AT 6:43 PM
  • Tiny
  • mastertechtim
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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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Monday, July 7th, 2008 AT 6:48 PM

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