OBDII P0401 DTC Code question
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OBDII P0401 DTC Code question
I scanned my girlfriend's '99 F-250 SuperDuty V-10 w77k miles and found a P0401 code.
The truck has been idling rough and missing for a few months, but no check engine light. I replaced the spark plugs and the old ones looked clean, but well worn.
The truck seemed to run better for a day or so, then the check engine light came on and it started running rough again
The P0401 code means 'Exhaust Gas Recirculation Flow Insufficient Detected'
Does anyone know the correct troubleshooting procedure for this error?
Is this a common problem on the V-10, it seems to be on other Ford products.
Thank you for any info you can provide!
davidk2
The truck has been idling rough and missing for a few months, but no check engine light. I replaced the spark plugs and the old ones looked clean, but well worn.
The truck seemed to run better for a day or so, then the check engine light came on and it started running rough again
The P0401 code means 'Exhaust Gas Recirculation Flow Insufficient Detected'
Does anyone know the correct troubleshooting procedure for this error?
Is this a common problem on the V-10, it seems to be on other Ford products.
Thank you for any info you can provide!
davidk2
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OBDII P0401 DTC Code question
Well she took it to the dealer today and this is what they recommended:
"Customer states check engine light on, Diag EEC, Monitor tests, DPFE sensor out of range, cylinder balance tests show #6 misfire (no MIL for this though) Needs coil and plug."
"Also note engine has Bosch plugs (just put them in because Autozone was out of Motorcraft) have seen a lot of problems with Bosch, recommend Motorcraft plugs (add $200.00)
1. Sensor Assy EGR 98.83 + 35.73 labor
2. Coil and boot assy 85.78 + 57.19 labor
3. Spark plug 3.46 + 19.77 labor
4. BG fuel induct (clean inject) 48.35 + 60.00 labor
I'm thinking about having them address the P0401 code first by going after the EGR sensor, and waiting on the rest.
What do you think?
"Customer states check engine light on, Diag EEC, Monitor tests, DPFE sensor out of range, cylinder balance tests show #6 misfire (no MIL for this though) Needs coil and plug."
"Also note engine has Bosch plugs (just put them in because Autozone was out of Motorcraft) have seen a lot of problems with Bosch, recommend Motorcraft plugs (add $200.00)
1. Sensor Assy EGR 98.83 + 35.73 labor
2. Coil and boot assy 85.78 + 57.19 labor
3. Spark plug 3.46 + 19.77 labor
4. BG fuel induct (clean inject) 48.35 + 60.00 labor
I'm thinking about having them address the P0401 code first by going after the EGR sensor, and waiting on the rest.
What do you think?
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OBDII P0401 DTC Code question
Originally posted by rlh68050
I agree. Replace the EGR flow sensor and see what happens next.
I agree. Replace the EGR flow sensor and see what happens next.
Thank you
Dave
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OBDII P0401 DTC Code question
Try www.fordpartsonline.com
Isn't the emissions warranty on Fords longer than 77K miles? Isn't it like 80K miles?
The EGR is an emissions thing. Have it repaired under warranty, if you can.
I also think that the code may be getting thrown due to a problem with something else.
Does it run rough only at idle or throughout the entire rev range?
Isn't the emissions warranty on Fords longer than 77K miles? Isn't it like 80K miles?
The EGR is an emissions thing. Have it repaired under warranty, if you can.
I also think that the code may be getting thrown due to a problem with something else.
Does it run rough only at idle or throughout the entire rev range?
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OBDII P0401 DTC Code question
Originally posted by Monsta
Try www.fordpartsonline.com
Isn't the emissions warranty on Fords longer than 77K miles? Isn't it like 80K miles?
The EGR is an emissions thing. Have it repaired under warranty, if you can.
I also think that the code may be getting thrown due to a problem with something else.
Does it run rough only at idle or throughout the entire rev range?
Try www.fordpartsonline.com
Isn't the emissions warranty on Fords longer than 77K miles? Isn't it like 80K miles?
The EGR is an emissions thing. Have it repaired under warranty, if you can.
I also think that the code may be getting thrown due to a problem with something else.
Does it run rough only at idle or throughout the entire rev range?
It is rough during idle and accelleration, pretty much all of the time.
Dave
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
Likes: 20
From: Washington State
OBDII P0401 DTC Code question
I'd replace the coil & plug on #6 yourself and see what happens.
Mine was running rough and it turned out to be #9 coil.
I happen to think that it was the silicone crap that the body shop sprayed all over the engine to make it shiny for me when I picked it up. But I have no way of proving it...
Thing is though, it never set the light. The light sets for emissions stuff. Look in your manual and verify the length of warranty.
Mine was running rough and it turned out to be #9 coil.
I happen to think that it was the silicone crap that the body shop sprayed all over the engine to make it shiny for me when I picked it up. But I have no way of proving it...
Thing is though, it never set the light. The light sets for emissions stuff. Look in your manual and verify the length of warranty.
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Post Fiend
Joined: Jan 2002
Posts: 5,859
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From: USA
OBDII P0401 DTC Code question
Well, the SES light or Mil light will be set if the misfire threshold level is reached within so many drive cycles .
Ford problably balked at warranty when they saw the bosch plugs !
Monsta is right ,there may be other problems in the fuel delivery are also (filter)
Rich
Ford problably balked at warranty when they saw the bosch plugs !
Monsta is right ,there may be other problems in the fuel delivery are also (filter)
Rich
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