I hit some decent sized pot holes the other day, and now on ny dashboard I see ABS and parking brake lights are on. what gives? (1990 f150)

 

I have had this problem in my 90 F250 for years. I replaced the sensor in the rear diff and it didnt go out. I would like to hear anyones opinion as well.

 

have you checked the brake master cylinder? Does it have brake fluid inside?

 

Same thing happened to me, though it was caused by someone accidentally cutting me off in a round about (I was in the round about, he went through without looking), I braked really hard to prevent a collision and right after, both lights turned on. 2 hours later there was no brake pressure. It turned out that the front break calipers had shattered, amazingly, they were still the original calipers and had lasted 235,500 miles.

Once the calipers were replaced and the power braking hoses were reattached the lights turned off.

 

I have the same thing and I've seen it posted by others as well. Seems to be happening a lot lately. Not sure why, must be a solar flare or something

https://www.ford-trucks.com/forums/1304845-parking-brake-and-abs-lights-on.html

 

I will check the brake fluid and see if thats the culprit!