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Codes P1401 and P1409, crank no start?

Tiny
FCERVANTES
  • MEMBER
  • 2002 FORD EXPLORER
  • 4.0L
  • V6
  • 4WD
  • AUTOMATIC
  • 126,000 MILES
I have code p1401 and p1409, it will crank but will not start. I've tried disconnecting the DPFE sensor but nothing.
Thursday, August 10th, 2023 AT 4:24 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
When you turn the key on without cranking the engine over can you hear the fuel pump turn on for about 5 seconds? Also, will the engine run on starting fluid?

P1401 - Differential Pressure Feedback EGR Circuit High Voltage:
P1409 - Exhaust Gas Recirculation System Leak Detected:

If you can hear the pump and it won't run on starting fluid we need to check for spark, this video will show you how:

https://youtu.be/baq_aEWNQ0Y

And please go over this guide can well:

https://www.2carpros.com/articles/car-not-running-advanced

Please go over these guides and get back to us.

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Friday, August 11th, 2023 AT 10:50 AM
Tiny
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It has spark and fuel.
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Friday, August 11th, 2023 AT 8:30 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
How does it sound when the engine is cranking over? We should do a compression test to make sure the engine is not hurt internally.

Please go over this guide:

https://www.2carpros.com/articles/how-to-test-engine-compression

Please go over this guide and get back to us.

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Saturday, August 12th, 2023 AT 10:05 AM

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