Broken down in the mountains

My son's hove-to in a turnout on a mountain road with his 2008 (with about 115k miles). VSC, ABS, and Brake lights all went on. Brakes still worked and he was almost to his destination so he cautiously kept going. About a mile later, Check Engine light came on as well as red triangle, and accelerator stopped working. He was able to pull into a turnout (with SMS-only cell signal strength).

His Scangauge is reading a bunch of codes that don't come up with anything when I search (here or Google):
P0a86
C2886
C2986
B066b
B0664
B0686
C2186
C2086
P0060
C2386
B065d
C1986
... and maybe a few more, "the scangauge is being uncooperative".

12V battery is reading 14V with car on, 12.5-13V with car off. When he powers up the car, the ICE starts and the Check Engine light is on, but the others are now off. He did do an oil change this morning, about 50-60 miles ago. Says all fluid levels look okay right now.

He's a musician and is on his way to the biggest gig of the summer, which starts in 2-1/2 hours...

 

Thanks, I'll have him double-check. After an hour or so, the car was willing to re-start, and then was able to drive to destination (and back home after) with no further misbehavior or idiot lights. So immediate crisis over, now we just need to figure out what happened and why.