2012 International pro star help

Let me guess..max force?

 

The codes usually indicate something in the emission system,one sensor usually sets off multiple codes.
Electrical gremlins are the worst to track down...wish I could help.
The max force is world famous for being a money pit... unfortunately.

 

If it's running fine just drive it,most older trucks throw codes regularly.
Take it in as last resort while home.

 

I had a similar issue with a pro star except in my case the left turn signal would not work on any trailer I hooked to . It ended up being one of those breakers in the fuse box behind the pass side dashboard

And that is not a code , that is the software version . The code would start with “spn” “fmi” ”sa”

Turn the key to the on position and hold the “cruise on” and “cruise resume” at the same time . The gauges will sweep and you’ll get a read out with the software version and you’ll see “active codes” and “total codes” below that