What makes a check engine light turn on?


When the check engine light comes on, a common response is to worry that you're on the verge of an automotive disaster. But the reality is that the check engine light often illuminates as a indication of problems that are actually very manageable---it could be something as simple as a loose gas cap. Still, you'll want to get your vehicle into a reputable shop for diagnostics to help ensure that the problem doesn't worsen and leave you with more expensive repairs. Here's a look at six common reasons the check engine light comes on.

Spark Plugs/Wires Need Replacement

If you don't change out bad spark plugs and wires, you could end up having problems with your catalytic convertor and ignition coil.

Bad Ignition Coil

Your ignition coil is a crucial component of generating the spark that your engine needs to fire up. Extreme weather can sometimes cause their failure.

Faulty Mass Airflow Sensor

This senses how much air is coming in and then calculates how much fuel it should be injected with. This is a rather affordable repair.

Failing Catalytic Convertor

This is a costlier fix, but it's a necessary one because your catalytic convertor is what keeps tabs on your carbon monoxide and turns it into an emission that isn't as harmful to the environment.

Faulty Oxygen Sensor

The oxygen sensor tracks the quantity of unburned oxygen in your exhaust system. If problems with it are not addressed, fuel-efficiency can significantly worsen and issues with the catalytic convertor can arise.

Unsealed Gas Cap

If your gas cap is loose, fuel can evaporate before you get the chance to use it, which can actually cause the check engine light to illuminate.

If you're in need of check engine light diagnostics or repair, be sure to get in touch with a reputable mechanic. For auto repair in Airway Heights and Spokane, WA, the experts to contact are at Inland Sales & Service at 509-202-4025. Go ahead and give Inland Sales & Service a call today for all of your repair and maintenance needs!

Reid's Blog

Written By Brian Corey

Published By MORBiZ

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