Auto Repair Palo Alto - The Car Doctor

7 Reasons the Check Engine Light Illuminates


The illumination of the check engine light doesn't automatically mean that an automotive disaster is on the horizon. Still, you'll want to soon bring your vehicle to the shop for diagnostics. This way, you can make sure that the problem doesn't worsen to the extent that you end up needing major repairs that could've been prevented. Here's a look at seven problems that trigger the check engine light.

Bad Spark Plugs

Older vehicles should have their spark plugs replaced about every 30,000 miles. For vehicles that were manufactured after 2000, you can typically wait 100,000 miles before replacing plugs. Healthy spark plugs will help your vehicle attain optimal performance and gas mileage.

Failing Mass Airflow Sensor

Mass airflow sensors keep track of the quantity of incoming air and determine how much fuel should be injected with it.

Faulty Catalytic Convertor

For carbon monoxide to be turned into a less harmful emission, a healthy catalytic converter is needed. While this can be a rather expensive issue, it's an important one to address.

Bad Oxygen Sensor

Oxygen sensors monitor the amount of unburned oxygen that's present in the exhaust system. Oxygen sensor issues can lead to catalytic converter trouble.

Failing Battery/Charging System

When a battery is failing, it can cause low voltage at the computer, which can consequently trigger the check engine light.

Faulty Ignition Coil

Ignition coils play a pivotal role in creating the spark needed for engines to come roaring to life on all cylinders. Ignition coils sometimes fail because of extreme weather conditions.

Loose/Missing Gas Cap

While this might seem like a trivial issue, a poorly-fitting gas cap can lead to the evaporation of fuel before you get the chance to use it---and can actually trigger the check engine light.

If you need check engine light diagnostics and repair, be sure to get in touch with a reputable auto shop. For check engine light diagnostics and repair in Mountain View and Palo Alto, CA, contact the experts at The Car Doctor at (650) 492-6853. Feel free to give The Car Doctor a call today to schedule an appointment for any of your repair or maintenance needs!


The Car Doctor Blog
Posted: June 12, 2020

Written and Published By MORBiZ



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