help truck wont start

[brown bear]

after i install my gauges i try to star the truck but it wont all i heard is the stater and it show me a code with is P1631
anything will help thank you:help

 

[RENODMAX]

check your fuses. where did you pull power from also make sure if you disconnected a battery that you reconnected it

 

[brown bear]

on the ignition fuse in the fuse box that is on the left hand side of the dash board. the fuse is the one on the right top side but i hook the power on the back of it

 

[RENODMAX]

Check fuses and batteries

 

[brown bear]

i did check them and all it works is the starter