Are these DTC's anything to worry about???

[Dreed]

I got the following DTC's when I checked them this morning....

P0405 - EGR A CKT Low
P0603 - Internal Control Module Keep Alive Memory (KAM) Error
P0683 - Glow Plug Control Module To PCM Communication ckt
P1000 - OBD System Readiness Test Not Complete

When I got home after driving this evening they all were still present.

I tried to clear them and the P0405 and P1000 stayed but the other two are gone.

Any ideas?

Thanks
Dave

[goosegodz]

Try to unplug the egr valve then plug it back in. If it goes away great, if not you might need a new EGR valve. I had the same code after i replaced #7 injector, I must have bumped it unknowingly. plugged it back in and was good to go!!
Good Luck,
Todd

[Dreed]

Todd,
I don't have an EGR valve. Mine was deleted a while ago.