When your check engine light comes on, it can be alarming, especially if you're unsure of the cause. While some issues might be minor, others could indicate serious problems that need immediate attention. The important thing is that you visit the shop ASAP for diagnostics. At Jerry’s Auto Repair, we provide expert check engine light diagnostics and repair in the greater Grandview, MO area. Here are five common reasons the check engine light may illuminate.

Faulty Oxygen Sensor

Oxygen sensors monitor the amount of unburned oxygen in the exhaust system. A malfunctioning oxygen sensor can lead to poor fuel-efficiency and higher emissions. When the sensor fails, it often triggers the check engine light, and replacement is necessary to promote optimal engine performance.

Failing Catalytic Converter

The catalytic converter is a crucial component of your vehicle’s emissions system. It converts harmful gasses into less harmful emissions before they exit the exhaust. If the catalytic converter is clogged or failing, it can reduce your car’s performance, increase emissions, and trigger the check engine light. 

Loose/Damaged Gas Cap

A loose or damaged gas cap is one of the simplest and most common reasons for the check engine light to turn on. The gas cap seals your fuel system. If the cap is loose or cracked, fuel may evaporate before your engine gets the chance to run on it.

Malfunctioning Mass Airflow Sensor

The mass airflow (MAF) sensor measures the amount of air entering the engine and helps the computer determine how much fuel to inject for proper combustion. If the MAF sensor is faulty, it can cause the engine to run too lean or too rich, which can lead to poor performance, rough idling, and even stalling.

Worn Spark Plugs or Ignition Coils

Spark plugs and ignition coils work together to ignite the air-fuel mixture in the engine’s combustion chamber. As they age, spark plugs can wear out, or ignition coils can fail, resulting in engine misfires. Replacing these components is a relatively simple and affordable fix that can restore your engine’s performance.

Check Engine Light Repair in Grandview, MO

For check engine light diagnostics and repair in Grandview, MO and the surrounding area, contact Jerry’s Auto Repair at (816) 722-2344. Feel free to give us a call to make an appointment!