Trouble Code? For 08 1500 5.3

[r6realtor]

Hey guys does anyone know what code P3400 Bank1 cylinder deactivation means? I just hooked up my edge and decided to check codes and that one came up, I just put a lift tires and wheels on the truck no other mods. Any help would be greatly appreciated!

Thanks

Jason

[r6realtor]

anybody???

[txab]

Sounds like something to do with your AFM

[r6realtor]

I dont know but I don't seem to be have any troubles at all with the truck as a matter of fact my 4x4 guys tells me it's the peppiest(if that's a word ) 1500 he has ever driven after a lift and tires/wheels, to me it doesnt feel like it lost a lick of power, so I don't know, hopefully nothing serious?