I was driving my vehicle and a car in front of me stopped at a traffic light. I attempted to brake my truck to stop the vehicle and I only had limited braking power and hit the vehicle n front of me. I had been experiencing intermittent ABS and Traction Control lights and I had a mechanic check all the wheel sensors and replaced one sensor that was damaged when the sensors were checked and cleaned. I had no indicator lights on prior to the crash and the ABS and Traction Control lights were illuminated after the crash. This was verified by the officer onsite at the crash.