What are common problems that trigger the check engine light?


An illuminated check engine light doesn't always mean that your engine is teetering on the brink of disaster. Still, it's smart to soon visit the shop for computerized diagnostics so that any emerging problems can be identified before they escalate to the point that extremely expensive repairs are needed. At All Engines & Transmissions, our local mechanics are experts at diagnosing and fixing common engine problems.

Common Reasons the Check Engine Light Turns On

When the check engine light illuminates, a common culprit is catalytic converter trouble. It's important that your catalytic converter is in strong condition so that your car's emissions are minimally polluting. Warning signs of a catalytic converter problem include worsening gas mileage, poor acceleration, and a smell akin to rotten eggs. A bad oxygen sensor may also trigger the check engine light, and could also cause catalytic converter issues to develop. Another type of sensor trouble that can cause the check engine light to come on is a problem with your mass airflow sensor. With a faulty MAF sensor, you may notice problems such as worsening acceleration and stalling out soon after starting your car.

A bad battery can also make the check engine light turn on. This occurs when a failing battery causes low voltage at the computer. When the check engine light turns on, there's a chance that you have faulty spark plugs. In newer cars, plugs commonly last for 100,000 miles, but vehicles more than twenty years old often need their plugs to be replaced on a more frequent basis. Bad ignition coils are also sometimes to blame for an illuminated check engine light. Signs of an ignition coil issue include decreasing gas mileage, stalling, and no-start. And while it might seem strange, it's also possible for your check engine light to be triggered if your gas cap isn't tightly secured.

Check Engine Light Repair in Westminster, CO

When you need check engine light diagnostics or repair, contact All Engines & Transmissions at (720) 707-0183. At our nearby auto shop, we can accurately diagnose your engine trouble and get right to work on repairing it. And if your engine is beyond repair, we provide rebuilt engine installation in Westminster, CO. Feel free to give us a call today to schedule an appointment for any of your vehicle's repair or maintenance needs!


All Engines & Transmissions Blog
Posted: June 29, 2021

Written and Published By MORBiZ


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