There was a study that was conducted in 2019 that tested the check engine light. Many people believe that this light comes on for no reason at all. This study proved otherwise. In fact, the study showed that the check engine light is very effective in alerting drivers of engine trouble whether seen or unseen. This is why it’s important that you contact Willoughby Hills Auto Repair immediately if your check engine light comes on. Here are common causes of a check engine dashboard warning.
Catalytic Converter Failure
The catalytic converter is part of your vehicle’s exhaust system. This part processes vehicle exhaust before it is released through the tailpipe. Over time, the catalytic converter can get clogged, and this will cause it to malfunction. When it does, the check engine light will turn on.
Electrical System Failure
Your vehicle has an array of sensors and computer chips. If any of them malfunctions, the check engine light will turn on. If the electrical system problem is with the battery or the alternator, a battery-shaped or ALT light will turn on.
Faulty MAF Sensor
The MAF sensor stands for the mass airflow sensor. This sensor tracks the air that comes into the engine. It can get dirty or malfunction when it gets old, although this sensor usually lasts a lifetime of your vehicle. When it malfunctions, the check engine light will come on.
Faulty O2 Sensor
The O2 sensor stands for the oxygen sensor. This sensor lasts about 90,000 miles. Once it fails, you will end up with the check engine warning and engine performance issues. In addition, your vehicle will be unable to pass an emissions test with a faulty O2 sensor.
Faulty Spark Plugs
When to change the spark plugs depends on your vehicle’s make, model, and year. Older automobiles need the spark plugs changed every 30,000 miles; newer automobiles can go as long as 100,000 miles before a plug change. If the plugs are faulty, you may get a check engine warning.
Transmission Problems
The transmission doesn’t have a light of its own, so the engine control module turns on the check engine light when it is having problems. Aside from the warning light, you will likely be able to feel or hear your transmission problems and how your automobile shifts gears.
Unsealed Fuel Cap
Finally, if you just filled up your tank, you may not have screwed your gas cap on tightly. An unsealed fuel cap will turn on the check engine light because fuel is evaporating out of the tank.
Don’t panic. Willoughby Hills Auto Repair in Willoughby Hills, OH, can help if your check engine light has come on. Call us today for an appointment.