Hi! Im new to this forum and my 2003 Eclipse is my first car. Just recently the check engine light came on and I had the computer read and it turns out I need some new o2 sensors. I wanted to know how many sensors are in the car. Its a V6 engine and I've looked it up, and some places it says theres 2, and others its says 4. I need a definitive answer because emissions testing is coming up soon so I can renew my registration.