My ABS light and TCS light are always on. I hooked the reader up to the computer and it shows no codes. At one point the lights would only come on if it was raining. Does anyone have an idea of what the fix is for this?

 

If you have your radio code, disconnect the battery for 10 min.

 

Thank you for the suggestion but it didn't work. If it is an ABS sensor, how do I test each one so I can find the faulty one?