6.0L WITH P0405 CODE

[Bennie]

I have a 2006 F350 Super Duty that keeps giving me the P0405 code. The engine has had the EGR system bypassed and it also has a Banks tuner. I have had all the upgrades done to this motor (head gaskets, studs, oil system) there is probably more that I don't remember. I have spent a lot of money on this engine and now it is giving me this code. Seems like it only comes on when the AC is being used and it doesn't happen all the time. The check engine light will go out after about 3 days. The engine seems to be running fine and has plenty of power.

Any help or ideas would be greatly appreciated.

Thanks
Bennie

 

[01yellerCobra]

Double check that you have the EGR turned off in the tune. If it's not off its still looking for the valve.

 

[WD40]

Hello Bennie, and Welcome to SDD.com
Doug

 

[Bennie]

Thanks Cobra, I will check the tune.

 

[acende]

Also check that you have the correct erg as there are two different ones , they have different voltages. Strange but true.