Question about 2003 Ford F150 Regular Cab

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I have a 2005 6.0 liter powerstroke f-350 with codes P0404 and P0405 I have tried cleaning the egr valve and reset the code worked fine for a little while then the codes came back.

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Turbo is carboned up in the vanes

Posted on Jul 27, 2010

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Stalling wont idle


  • egr valve
  • egr sensor
  • cam shaft sensor
  • barometric pressure sensor (map sensor)
vacuum leak somewhere, out of time, broken timing belt or missing teeth.

Dec 12, 2013 | Cars & Trucks

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I have a 1997 olds achieva with codes p0404 and p0405. i have replaced the egr valve with no change in codes.


when codes are set it does not mean a part is defect ,there is wires connect to it. EGR solenoid are 3 solenoid with 3 holes one 1/7orifice: second is 2/7 third 4/7 pcm command those solenoid to obtain the right amount of exhaust but P0404 said performance is bad and P0405 said circuit A is low or 0volt . pull wire one by one see if it bounce mean wire is cut inside

Sep 14, 2013 | Oldsmobile Cars & Trucks

1 Answer

I have a 2005 6.0 liter powerstroke f-350 with codes P0404 and P0405, I have tried cleaning the egr valve and reset the code worked fine for a little while then the codes came back.


I have a 2005 6.0 liter powerstroke f-250 with P0404 and P0405, I have tried cleaning the egr valve and reset the code worked fine for a little while then the codes came back. Any Idea what's going on?

Jun 15, 2010 | 2003 Ford F150 Regular Cab

1 Answer

2005 dodge caravan diagnostic code p0404, please explain and do i replace the egr valve?


p0404 is-egr flow ckt range/performance, check egr, remove from vehicle and clean out carbon from valve and where it mounts on engine. also check the wireing connector and wire to valve. if this dosnt work, replace valve,

Apr 23, 2010 | 2005 Dodge Caravan

1 Answer

1998 Chevy Truck 1/2 ton 350 engine. Trouble codes P0404, P0405 and P1404. I replaced the EGR valve. Now I get t/c P0404 and P0405. Now what should I check?


404 is exhaust gas recirculation circuit, and 405 is exhaust gas recirculation sensor circuit low. EGR sensor or ground?

Nov 13, 2009 | 1999 Chevrolet Silverado 1500

3 Answers

I have a 2005 dodge ram 1500 4x4 4.7 liter with 81,000 miles my check engine light came on and i get codes P0404 and P0405 what component do i need to replace to fix the problem ? also it seems to be a...


p0404 is EGR valve. you can try freeing it up with B12, I did that to my 2000 Expedition and it has worked for over a year so far p0405 EGR position sensor input below the minimum acceptable voltage range (shorted low) Actions
  • Clean or replace the EGR
  • Replace the DPFE
  • Clean the throttle body
  • Clean the MAF - use electrical contact cleaner and be gentle

Oct 14, 2009 | Dodge Ram 1500 Cars & Trucks

3 Answers

P0405 code.. changed egr valve and cleaned passage


The truck has two egr vales unless it's a 4 cylinder, then it has one, if it say your slipping and it's automatic change the filter and oil in the transmission and add Lucas transmission fluid conditioner to the tyranny. If the EGR valve is still giving a code then it means something in the egr system is not working, and one item that comes to mind is the purge canister valve on the evaporative control canister. To test find the purge valve and crimp it off with a pair of vise grips to close the vent then drive it. If it runs good then you have found your problem. Also low vacuum can cause the transmission not to shift correctly as it needs a vac. input for it to shift. Check your transmission fluid if it is brown and sort of smells like onions then the fluid is burnt and will cause all types of erratic behavior. And since I took the time to write this I would like to get some feed back as I am about to stop doing this.

Jul 20, 2009 | 1998 Chevrolet S-10 Pickup

1 Answer

Disgnostic code meaning


P0404 Exhaust Gas Recirculation Control Circuit Range/Performance
P0405 Exhaust Gas Recirculation Sensor “A” Circuit Low


It sounds like you have a failure of the EGR valve.

Sep 28, 2008 | 2000 Chevrolet Tahoe

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