Trouble Codes from no where.

[V8powerbaby]

Well was driving from back home sunday and about half way through my trip i got some codes on my scan guage and my engine started being crazy. The first one is P0308 which is my #8 cylinder misfiring and it feels like is so i am gonna check that but i had no luck finding what code P0800 is or B0500. the only thing i have noticed is the sputtering from the misfire and thats it was thinking maybe the misfire threw these codes for some reason. Any help would be awsome. Thanks everyone.

 

[Blee1099]

My book says transfer case CTRL system for P0800.

 

[V8powerbaby]

hmm i havent had any sounds,hesitations,no problems what so ever from the drivetrain plus i am only 2wd so i dunno why it would have given me that code. Thanks Blee