Q&A

 Rookie

After having my front brake replace, ABS light and Brake light kept coming on and off not early in the morning, but toward afternoon when the enging is warmng up. Yesterday the check engine light came up as well. I brought my car for diagnostic, I was told the car has speed sensor problem. Please tell me what cause the speed sensor problem? Why did the brake light and ABS light kept showing on and off? Thank you very much!