I'm confused here, you say wheeling, but you say nothing deep. So what type of wheeling are you doing? Not trying to bash you just trying to figure out are you going through mud which can cake up on ground points, are you hitting water (which you say no), are you playing in clay, are you crawling it up rock, etc etc... It without a doubt sounds like the PCM is on it way out. Only reason I know this is because it happened to me. and it was random ghost codes too, one would come up, then go away, then another etc etc... Finally it through the infamous "Secondary ignition short" which leads back to faulty PCM. Pull your PCM, check the plugs, make sure all male pins are there and make sure all female brass fittings are inside of the plug. Also make sure the clips are holding the plugs in tightly.
Let us know
Got it stuck. It's still stuck. It's so stuck I could call insurance and say it was stolen and no one would ever know. It's so stuck I don't know anyone with a capable enough 4x4 to even to to where I got stuck to winch or yank me out.