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How to diagnose trouble Codes OBD-II

Old 03-25-2011, 07:40 PM
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Originally Posted by Broncomanjoe View Post
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.
My truck did the same thing haha. Cyl 1 coil crapped out on me the day I had to go out of town for training during a snow storm lol.
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Old 03-30-2011, 04:57 PM
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Default 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.

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.
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Old 07-26-2012, 06:47 PM
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Originally Posted by akc150 View Post
Fredos 97 f150 does not have individual coil packs it has one on each side on front of motor with 4 plug wires on it called ignition coil they are 45-50 $ per side not like individual coils
Are you sure? My 97 f250 had individual coil packs.
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Old 01-28-2013, 11:46 PM
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Default Help

My 2000 f150 5.4 has three codes what are they. P1549 P0153 and P1151 what needs to fixed?
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Old 02-23-2013, 09:16 AM
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Originally Posted by DrMacc View Post
hey my 2012 toyota tacoma is acting up and won't start, any help?
ya just buy a ford lol,i bet you its your dist cap damp,spray wd-40 around the outside edges of it and give it a couple of minutes,this only happends in the winter monthes
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Old 03-21-2013, 11:49 AM
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I got p0401 insuffeciant flow new egr and cleaned fuel system still same code
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Old 05-08-2013, 06:31 PM
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Originally Posted by Butch Golding View Post
I got p0401 insuffeciant flow new egr and cleaned fuel system still same code
Here are 4 other reported fixes:
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.
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Old 03-10-2015, 09:51 AM
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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.
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Old 04-08-2015, 01:01 AM
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App helps look up diagnose trouble codes and possible causes.
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Old 08-19-2015, 11:27 PM
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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.
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