There are countless reasons why your check engine light could turn on, including a wiring fault, a bad oxygen sensor, or a misfire. Sometimes, the check engine light won’t reset on its own, even ...

When your check engine light comes on, it is a warning that something is wrong with your vehicle. Here are five of the most likely causes to check for.

The check engine light is your car’s way of alerting you that something's amiss — but it could be as minor as a loose gas cap, or more serious, like a faulty oxygen sensor. Repair costs for ...

A check-engine light could be a gentle reminder or a sign of something catastrophic. We explain what a malfunction indicator light is and what you can do about it.

The camshaft position sensor gathers information about the vehicle's camshaft speed and sends it to the vehicle's engine control module (ECM).

The oxygen sensor was replaced but the 'check engine' light won't go out. Now what? Which octane fuel is best? AAA's Car Doctor has answers.

Owners of 2007-09 Honda CR-V models may come into your store with the check-engine light illuminated and one or more of the following trouble codes stored in PCM memory: P0134, P0135, P0171 and P1157.