need some help with dtc's

[Fast_Frank]

i scaned my truck the other day because it just dont have the power it used to have and has a slight miss at idel...these are the codes i got
p1876- transfer case 2 wheel drive solenoid circuit failure
p0605 internal control module only memory (rom) error

i also did the contribution test and #8 had a value of like 5.XX %
and #3 was 2.XX % the rest were 0 or .1 % i dont know what the numbers mean. thanks for any help

[Fast_Frank]

ANY ONE? I DID THE BUZZ TEST ON A WARM MOTOR, IT CAME BACK FINE, COULD I STILL HAVE A BAD INJECTOR?

[Fast_Frank]

HUMM I GUESS I DONT HAVE HIGH ENOUGH POSTS TO GET HELP?

[POWERED SPARKLESS]

I noticed that DIRK is logged on, maybe he could help you.

[Dirk]

Sounds like an injector issue. What did you use to test with?

Need to run a compression test.

[Fast_Frank]

the Auto E program

[Fast_Frank]

i used the auto enginuty program...