What does that cryptic symbol called a Check Engine Light really mean?

Your check engine light flickers on, and you feel a surge of panic. Unfortunately, it's one of those cryptic symbols that tells you next to nothing. It has been around since the 80s, and the average consumer still hasn't figured it all out. Even new auto repair shops and mechanics have problems understand it.


First why is it even part of my car? As part of your vehicle's onboard diagnostic system, the check engine light monitors the engine's fuel mixture among other things. Essentially, it flares up when emissions related issues are detected, and it could point to many different components.


A few of which are...

O2 Sensor

A faulty O2 sensor is a simple fix for C&L Automotive by using the right tools and our experience, it's a quick fix to get you back on the road. Usually a failing sensor means a loss in power and a dramatic increase in fuel consumption. Your vehicle may fail emissions, and if you allow the problem to persist will eventually result in costly damages.

Gas Cap

It's hard to believe something so seemingly insignificant, a little gas cap can activate your check engine light. It just goes to show how complex vehicle computer systems have become. Luckily, it's an easy fix. First go try and screw it on nice and tight, if that doesn't work give us a call.

Now a check engine light can literally mean anything, so here are a few you may not want to hear but you will find we always give you the truth.

Catalytic Converter

Replacing a clogged or contaminated catalytic converter, depending on the car's make, could cost a few hundred dollars to more than a thousand.

Slipping Transmission

Fixing or replacing a transmission is one of the more costly investments to keep your car on the road. The good news is most of the time the sooner it's caught and diagnosed, the less expensive it is. Instead of needing to replace the entire