Automotive Repair Blog in Finksburg & Catonsville, MD

Check Engine Light On? Understand the Reasons Why

Five Reasons Your Check Engine Light is On

When your check engine light pops on your dashboard, it can cause a sinking feeling in the pit of your stomach. You may be thinking, “What’s wrong with my car? Will it be expensive to repair?”

There are several reasons behind an illuminated check engine light. That’s why it’s important to get check engine light diagnostics services from a trained technician. Auto Clinic of Maryland in Finksburg, Maryland, discusses five common culprits behind a check engine light.

Loose Gas Cap

If your check engine light is on, always check your car’s gas cap first. This important component seals your car’s fuel system and ensures proper pressure in the gas tank. If the gas cap is loose, this could cause your check engine light to come on.

Oxygen Sensors (O2 Sensors)

These sensors monitor and measure how much gas your vehicle burns. Most cars have between two and four oxygen sensors. If one of these sensors is faulty, your check engine light can be triggered. A bad oxygen sensor will increase fuel emissions.

Faulty Catalytic Converter

If your car’s catalytic converter is faulty or failing, the check engine light will pop on. Routine oil changes help to keep this component in tip-top shape.

Bad Spark Plug

Spark plugs ignite your engine’s cylinders to help power your car. If one of them is bad or your ignition coils are failing, your check engine light will mostly lightly go on. When spark plugs go bad, your car may misfire or be slow to accelerate.

Failure of Airflow Sensor

This part monitors how much air enters your car’s engine. If the mass airflow sensor stops working, it can cause stalling, increased emissions, and an illuminated check engine light.

Get Your Car Checked Out

If your check engine light is on, book a check engine light diagnostic at Auto Clinic of Maryland in Finksburg, Maryland. Call us at (410) 876-6313 to schedule your appointment and get your car back on track.

Written by Auto Clinic of Maryland