ABS and parking brake lights on after washing engine bay

I've read the old threads on this topic. The difference with mine is I washed my engine bay prior to the lights coming on. Washed my truck last night and also washed thoroughly under hood. Unplugged neg battery cable before doing so.

I let it dry overnight then this morning reconnected the battery. Cranked it up and noticed it was idling a little low (did that last time I washed under the hood). Took off down the road and after about 10 mins the ABS light and parking brake light came on. Turned the engine off and back on, no change.

I'm about to haul a trailer for a buddy 2 1/2 hours. Brakes feel fine so I think I'll just hope for the best. I can take it to the dealer afterwards. Strange coincidence for a wheel sensor or something to go out. A lot of water got on the ABS unit over on the right side of the engine. But then it dried overnight. Thoughts before I take it in?