What is causing my check engine light to illuminate?

What is causing my check engine light to illuminate?


An illuminated check engine light doesn't necessarily indicate that your engine is on the verge of failure. But it's still wise to visit the shop for computerized diagnostics so that any emerging issues can be identified before they escalate and become more expensive to fix. At Desertmotive, our local mechanics are experts at accurately diagnosing engine trouble. Then, we can get right to work on restoring your engine to proper working order.

Common Check Engine Light Triggers

Catalytic converter trouble is often to blame for an illuminated check engine light. When a catalytic converter isn't working like it should, symptoms may become apparent such as worsening gas mileage, poor acceleration, and a sulphurous smell. It's important that your catalytic converter is functioning properly so that your car is minimally polluting. Oxygen sensor issues can cause catalytic converter problems. A faulty oxygen sensor may be the reason your check engine light is on. Another type of sensor trouble that can trigger the check engine light is when there are issues with a mass airflow sensor. MAF sensor trouble may cause your vehicle to stall out shortly after you fire it up.

With a faulty battery, there could be low voltage at the computer, which could cause the check engine light to turn on. Another reason the check engine light could come on is faulty spark plugs. Newer vehicles can regularly go 100,000 miles before they need plug replacement, while cars made more than twenty years ago usually need new plugs more often. Bad ignition coils could also trigger the check engine light. Signs of ignition coil trouble include: stalling out, decreasing gas mileage, and an engine that won't start. And, as strange as it may sound, a loose or missing gas cap will sometimes trigger a check engine light too.

Check Engine Light Repair in Scottsdale, AZ

When you need auto repair in Scottsdale, contact Desertmotive at (480) 443-2600. At our nearby auto shop, we can accurately diagnose and repair your engine trouble. Feel free to give us a call today to schedule an appointment for any of your vehicle's repair or maintenance needs!


Desertmotive Blog
Posted: June 30, 2021

Written and Published By MORBiZ