Check Engine Light Check Maryland Heights, MO

At Quality Auto Repair & Auto Sales, we handle diagnostics for all makes and models right here in Maryland Heights, MO.

We hook up advanced diagnostic gear to your car's computer. That gives us the codes we need to see why your check engine light popped on.

The process is quick and doesn't eat up your whole day. Basic checks usually take about 30 minutes.

Common reasons for check engine lights include:

• Loose or damaged gas cap
• Faulty oxygen sensor
• Catalytic converter issues
• Spark plug or ignition coil problems
• Mass airflow sensor malfunction



We always recommend getting your warning light checked out quickly. Early diagnosis usually means less hassle and lower costs.

After we finish, we'll walk you through what we found. No confusing jargon, just clear options and honest estimates—no pressure either.

Our certified techs have handled all sorts of check engine light issues. We aim for an accurate diagnosis the first time, every time.

Give us a call if you want to schedule a check engine light service in Maryland Heights. We want to help you keep your car running safely and smoothly.

Other common triggers include:

• Faulty spark plugs or wires
• Mass airflow sensor failures
• Bad ignition coils
• EGR valve issues
• Vacuum leaks
• Battery or charging system problems

Missouri's wild temperature swings can sometimes mess with your sensors, causing temporary warnings. Still, we'd never tell you to ignore the light.



When it pops on, your car's computer has picked up something unusual. It could be nothing major—or it could be serious. You won't know until you check it out.

If your check engine light comes on in Maryland Heights, swing by and let us take a look. It's better than waiting for a small issue to turn into a headache.

An OBD-II scanner is a diagnostic tool we use at Quality Auto Repair & Auto Sales. It helps us figure out what's going on inside your car when that pesky check engine light pops up.



You plug the scanner into your car's OBD-II port, which is usually hiding under the dashboard near the steering column. Once it's connected, the scanner talks straight to your vehicle's computer system.

But that's not all our scanners can do:

• Show real-time engine data
• Keep an eye on emission systems
• Check how the fuel system's doing
• Test oxygen sensors
• Reset the check engine light once we've made repairs