Is there a walk through walls action replay code for Pokemon rangers guardian signs for us version?

No. But You can use Ranger Signs to summon Pokemon to get over obstacles

Yeah there is. Depends on which version your playing

Game ID:B3RP [UK/EU version]

Walk Through Walls (Select+Up ON, Select+Down OFF)

94000130 ff7b0000

521005b8 ea00003c

021005b8 0a00003a

d2000000 00000000

94000130 ffbb0000

521005b8 0a00003a

021005b8 ea00003c

d2000000 00000000

Press Select+Up to Activate, Select+Down to Stop

Not sure which Game ID this is for: Nor if it's working

Walk Through Walls (Select Up ON, Select Down OFF)

94000130 ff7b0000

521005b8 ea00003c

021005b8 0a00003a

D2000000 00000000

94000130 ffbb0000

521005b8 0a00003a

021005b8 ea00003c

D2000000 00000000

Press Select Up to Activate, Select Down to Stop

I do know that the UK version works.... I'm using Acekard 2i's code reader.