My 2005 chevy equinox is displaying the P0405 code. I know its the egr valve. How do I fix it?

Betty, Check the attached EGR links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Exhaust Gas Recirculation Valve EGR Checking
Faulty EGR Valve Symptoms and EGR Valve Cleaning
EGR Valve Replacement Chevy Venture 3 4L Engine
Installing New EGR Valve

You need to diagnose the EGR System
Not replace parts in hope of getting it right
Codes only indicate an Emissions Malfunction
or Fault, thus the code
Codes & trouble charts are used to then component test
Google the code & study the problem
There are many EGR Codes--- study yours ,as it pertains
to your vehicle & engine package
Try You Tube Video-- to get a basic of what egr system is & does

disconnect battery 10 min.. or go buy auto zone let them hook there computer to it and clear codes they will do this for free

P0404
EGR Sensor Circuit Range/Performance, Stuck Open, to fix, either clean out or replace it, this should do it. p1404 relates to same problem. replace EGR and you should be ok. dont forget to clear the code when repaired.

P0108....Manifold Absolute Pressure/Barometric Pressure Circuit High Input

P0300....Random/Multiple Cylinder Misfire Detected

P0400....Exhaust Gas Recirculation Flow

P0433....Heated Catalyst Efficiency Below Threshold (Bank 2)

Do not have a listing for the 0068 reading as it doesnt exist in my list ,looking at this i would block off the EGR valve with a nice home made coca cola can gasket and this should cure your problems

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?

have the engine de-carboned. its a machine that runs a chemical through the combustion system, that takes about 45 minutes.

Its right in front of the engine as soon as u open the hood On the left side. It has one electric cable connected on top and a pipe with the diameter of a dime at the lower side running to a lower section of the engine.

Do you have an odd smell in the interior compartment? This could be due to the egr being damaged from debris from the road. Hire a professional to do it or go to a car parts store and get the motors repair manual or similar.

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.