A check engine light can come on for many reasons, from a loose gas cap to a more serious engine or emissions problem. At Johns Auto Pros, we diagnose the cause, not just read the code.

Common Reasons a Check Engine Light Comes On

1-Loose or damaged gas cap

2-Ignition or misfire problems

3-Fuel or air mixture problems

4-Emissions system issues

5-Sensor or electrical problems

A trouble code is only the starting point. At Johns Auto Pros, we diagnose the system to find the actual cause before recommending repairs. We Advise — You Decide.