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P1404

Tiny
HCORNWEL1
  • MEMBER
  • 2001 FORD TAURUS
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 139,000 MILES
I have a p1401 code says voltage is to high on dpef sensor I replaced the sensor with a new one is there any way for me to check voltage all so has a po301 code the mil light flashes when it set the code p1401 what else can be causeing the problem I checked little lines goin to dpef sensor they are not restricted all help apprechated
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Saturday, September 18th, 2010 AT 5:04 PM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Remove the EGR and check for restrictions.

Let me know what you find.
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Saturday, September 18th, 2010 AT 6:41 PM
Tiny
HCORNWEL1
  • MEMBER
  • 3 POSTS
Have had intake off throttle plate off egr valve off put air through little lines on exhaust can not find restrictions ahy where tryed two different dpfe sensors sets same code once the car warms up you can cut the mil light out it stay s out as long as car is warm but still has p1401 code in it when car cools off you get the light back on and get a po301 and a p1401 both so when cool it has a missfire
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Sunday, September 19th, 2010 AT 11:24 AM
Tiny
HCORNWEL1
  • MEMBER
  • 3 POSTS
Drove car 10 miles or so has plenty power so dont thik conveter is problem
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Sunday, September 19th, 2010 AT 11:26 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
If you keep getting a misfire on cylender 1, have you checked the plug, compression, and injector for that cylender?
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Monday, September 20th, 2010 AT 10:19 PM

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