Why the Check Engine Light Comes On

 

The check engine light (also called the malfunction indicator lamp) can light up for many reasons — sometimes it's because of a trivial issue like a loose gas cap to something that could cost you more if left unchecked. 

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Common causes include:

• 🚗 Loose or missing gas cap

• 🔌 Faulty oxygen (O2) sensor

• ⚙️ Emissions system issues

• 🔥 Engine misfire

• 🔍 Failed catalytic converter components

• 🛠 Tune-up or minor maintenance issues
   

Whether the light is steady or flashing, bring your vehicle in — our technicians will read the codes and explain the real issue.

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What Does My Check Engine Light Mean?

 

Your check engine light coming on means that your engine needs to be serviced soon. Sometimes, there are other indicators to show what might actually be the problem such as:

 

Flashing Light– There could be a serious engine problem that can damage other component parts. This could mean that:

• The engine is misfiring enough to risk damage to the catalytic converter caused by bad spark plugs, ignition system, and compression problems

• The engine has very low oil pressure

• The engine is overheating

 

Constant On Light– There could be a problem in OBDII emissions system. This could mean that:

• The emission component has failed

• The gas cap is missing or loose

• The engine needs a tune-up

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Find a Memphis-area location near you!

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Signs You Need Immediate Engine Service
Stop driving immediately and seek service if:
 

• 🔥 The check engine light is flashing

• 🛑 You hear engine knocking or irregular noises

• ⚠️ Your vehicle goes into limp mode or loses power

• 💨 You smell fuel or see smoke
   

These symptoms can signal serious engine or emissions issues that can get more expensive if delayed.

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Coleman Taylor honors 'most' extended warranties! Protect your investment and call us!