Anti lock/ brake light

98 olds intrigue 3.8L v6 150,000 automatic

my anti lock/brake light comes on my dashboard shortly after i start it and drive off. it happens when the car goes through its diagnostic test. usually within 10 seconds of driving the car.

i have no diagnostic machine. what would be the most common problem? thanks

Does the light stay on?

First check the brake fluid level. The light may warn of low fluid in addition to a problem in the ABS. A common reason for the ABS light to come on is a bad wheel speed sensor or a bad electrical connection to a wheel speed sensor.

And if the fluid IS low, check your brakes for wear.

brake fluid was fine. i don’t know how to tell if a wheel sensor is bad, but i unplugged them and plugged them back in. still have the problem. the light comes on and stays on till you shut off the car

You need to have the codes read. Some places will read them for FREE. Try Autozone or Advanced Auto Parts. Get the exact code not just their translation into English and post it back here.

it is of coarse “anti-lock brake code” c1264 i took the car to a local shop and he tested it on his machine and said for some reason the correct amperage is not getting/coming from the rear of the car. he said the alternator is putting out like it should. he said he checked amperage other places and couldn’t find any problem. brakes have 50% life left, no loose wires. i don’t know what else to check. could the battery be going bad?