Do u not have a code reader? It could be a million different things.Earlier today driving on an easy peasy dirt road, and hit a minor - really nothing - bump, and bam: CEL and ESC lights come on, and no power over 3k, again ...
Cannot get to the dealer for another week ...
Have u tried resetting the ECU yet to see if that fixes the issue?
Unplug the negative terminal, turn on your headlights (to bleed the residual power.) leave it sit like that for about 15min while the power bleeds out, then reconnect the terminal and see if the problem goes away.
If it does, just drive it normally for a while to see if it does it again.
This sounds electrical/computer to me. My guess is you are jarring something loose. Make sure the terminals are tight while your under the hood.
Either that or there is a loose ground somewhere feeding the ecu.