How to diagnose trouble Codes OBD-II
03-25-2011, 07:40 PM
#11
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FREDO What happened was you sprayed water on the top of the engine and water got down into a spark plug "pit" for a lack of a better word its the opening where your spark plug screws into the cylinder head and you shorted out a coil pack. This happened to me when i brought my truck in to get detailed and I had to replace the coil pack about $60 .. It happened the day I was heading out of town so it really sucked. but it takes 5 min to change it out.
03-30-2011, 04:57 PM
#12
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Ford repair manual on cd
I was talking with another member on facebook he was looking for a manual and had been sent all kind's of crap to scanned copies anyway I found the website where I got my f250 from and it is awesome, hope he see's this or anyone in need of the real mecoy.
www.repairmanualstore.com
it's the best repair manual I have in my garage and it's been used many time's over the last 2 year's, it's interactive and cover's everything you could ever have go wrong and then some, awesome ford repair manual.
www.repairmanualstore.com
it's the best repair manual I have in my garage and it's been used many time's over the last 2 year's, it's interactive and cover's everything you could ever have go wrong and then some, awesome ford repair manual.
07-26-2012, 06:47 PM
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02-23-2013, 09:16 AM
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05-08-2013, 06:31 PM
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Replaced Differential Pressure Feedback EGR (DPHE) Sensor
Cleaned EGR Passages
Cleaned EGR Transfer Tube
Replaced EGR Modulator
Possible Causes:
DPFE Sensor Downstream Hose Off or Plugged
DPFE Sensor Hoses (Both) Off, Loose, or Damaged
DPFE Sensor Hoses are Reversed (Installed Wrong)
DPFE Sensor Reference Circuit (5volt) is open or shorted to ground
DPRE Sensor Signal Circuit is shorted to ground
EGR Orifice Tube is damaged or restricted
PCM has failed
The printout for the p0401 code repeated each of these causes twice for each suggestion, so more than one item may be present and both should be checked [or replaced] in that case.
These are merely suggested causes and fixes, and carries with them NO Liability for this advice.
03-10-2015, 09:51 AM
#18
Senior Member
I asked on a different thread, and nobody responded. What are you guys using for a code reader? I see Actron has many choices to choose from. I'm looking for something cheap just to spit out the problem codes.
08-19-2015, 11:27 PM
#20
Hey all! I own a 2002 f-150 4.6L V8. I've got the engine code P0401 coming up and I've tried a few different things to fix it. I don't know what to try next.
1) replaced the gas cap
2) replaced the EGR valve and seal.
Cleared the code out and took it for a test drive but no luck. It threw out the same code again. Where should I go from here? I'm trying to sell it but I don't want to show my truck to people with a trouble code showing up.
1) replaced the gas cap
2) replaced the EGR valve and seal.
Cleared the code out and took it for a test drive but no luck. It threw out the same code again. Where should I go from here? I'm trying to sell it but I don't want to show my truck to people with a trouble code showing up.
