Abs light and brake light comes on once in awhile when driving. Why? any answers.

abs problems will effect ves-- tcs --cruise control -braking system check and test fuses relays wiring sensor and hubs

I, feel sorry for you, after reading your problem, but don't worry you visit the Reliable-Store they will help you for sure.
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When I had that problem with the emergency light it was the sensor for emergency brake
The abs and brakes sounds like you are loosing pressure in the system

If you do a lot of heavy towing it may be time for another brake job .

could be sensors getting bad and bad is they are in hubs.

This is the procedure when any light comes on your dash

By the way-- the same since 1983 some 31 years


You turn on the key-all lights come on the dash
Start engine they all go off --no faults with OBD2 System
Once a MIL Lamp,check lamp,ABS,trac,etc come on,you
check for codes that day or the next
Then you know if you should continue to drive until you have
an scheduled repair shop visit
You make every effort to have the vehicle diagnosed & ALL
things repaired,fix,whatever,once & done properly,the entire
car checked over ,complete within a week.

No driving around & asking what to do for weeks
Your car has faults that don't meet federal emission standards
or could cause damage. You don't know until it is checked out

I have no idea who told you to unplug a wheel speed sensor
or why your driving around knowing you have to make a repair
eventually,get it over with.

Someday-- such as a transmission issue-- driving 5 miles will
cost you 5 thousand

You have ABS System problems,Wheel Speed Sensor---Maybe!!

once should have been enough to get it fixed
indicates a master cylinder failure
go to a brake specialist shop for a proper diagnosis and quote
the master is probably original and is well past a replacement maintenance period

You might have a short in your wirring, get it checked before it gets worse

Cheers

Chris

I will bet money that it is the ABS/TRACS module. It is mounted under the master cylinder on the bottom of the ABS unit. These are very, very, very common failures. I have replaced hundreds of them in my career. To answer your other question, the TRACS system uses brakes. For example: in the snow, when the L or R wheel is spinning faster than the opposite, the TRACS will apply brake to the spinning wheel to slow it down to an equal speed. Hope this helps.

Low oxygen has nothing to do with the ABS. That is something to do with the PCM. You will need to take it to the dealer with the correct scan tool to read the stored ABS codes.