po 404 /405 issues

[lostscout]

anyone got any ideas...since my previous difficulties, I am getting a constant po404/405 code..... valve is new...ish about 500 miles

[Scottydoggs]

check the wires to the egr, they maybe damaged,. cracks, missing insulation will cause those codes. or the egr is bad.

[BillBoost37]

When you list a code, please list the name. It helps us out by not having to look it up for you. I get the impression that some folks are lazy and don't research and issue...they post and figure someone else will do the work.

Check the 5 volt and ground references

[lostscout]

sorry Bill...I'll get back to you...something about #1 wire low?

[Scottydoggs]

http://www.obd-codes.com/p0405

http://www.obd-codes.com/p0404

[Russosaur]

I get a random P0404 sometimes, my solution is going to be an EGR delete lol.

[Scottydoggs]

or just leave the egr and delete the codes. what i did to my car. sick of it popping up from time to time, same for the evap. deleted, in all i got like 12 deleted codes lol

[lostscout]

hmmmm how is that done so no cel comes on?

[Scottydoggs]

i have a dhp tuner, with a tuner program and hardware you cant set the codes to not report. and they show ready on a obd2 scan at inspection.