I'm having the same problem with the trac and abs light coming on from time to time. Took to mechanic, diagnostic showed 2 codes all to do with the abs sensor and hub assembly...replacing the hub assembly should do the trick

Suggest you have it check for DTC'S - diagnostic trouble codes . Also do you hear any grinding noise ? I have seen a bad wheel bearing cause this problem . Unwanted ABS activation locks up the wheel . and the lights come on .

Pull dash remove bulb if there is something wrong with abs system it probably goes through the brake circuitry and others easiest remove bulb or fix problem

Well you had a bad wire /sensor. Replaced it. It didn't fix the lights. An engine diagnosis won't tell about an ABS problem. Was the mechanic that replaced the wheel sensor , the same that did the engine diagnostics? If so, find someone else. Diagnostics should have been done on the ABS system, even though the wire was cut. This would have found that the main sensor?(assuming t they are talking about the ABS module) was bad to begin with. You can either have it fixed(costly) or live with it. When the ABS system goes out it reverts to the old braking system. Meaning that the tires can and will lock up. You can still stop though.

check abs, trac off can be turned off by computer service engine light can come on for both them items. check for air in ABS system, look for bleeder on ABS valve body

Nothing wrong. Doesn't that seem strange to you

The ABS & Trac came on because that system has issues

There may be stored data, if not a code present

The mechanic has to component test to find the problem

These guys spend too much time with a scan tool & I
think some of them are waiting for it to tell them something

Doesn't work that way. If everything goes as it should, the
scanner shows what the computer sees,that's all,& that can
be a lot,but you have to move on & use different skills that
not everyone has learned yet apparently

Try another shop

That really isn't a diagnostic test etc,just looking at data
stream,if they see nothing out of range they quit

That doesn't help you any,the problem is still there,intermitent
maybe, but there.

The system has to be scanned when the ABS light is on, only then will a fault code show up to lead you in the direction of the problem.

Drive to Autozone,they will test it for free,only takes a few minutes.

yes the abs and trac work on the same sensors, could be a bad wire, sensor,have it put on a real time scanner where you can read all the sensors and actuators while driving, easiest way

If you are using an obd2 reader, make sure it has all the updates. If the check engine light is on, is should show up on reader. There is also a ABS light tester as well. It sounds like an error in the ABS/Trac cirucuits. It could be a bad pump or faulty module.

yes go to the junk yard and match up the plug in with the same engine size it dont have to be the same year