What Does Check Engine Light Mean on Chevy Impala

Common causes for a check engine light to be triggered in a 2017 Chevy impala are a loose gas cap, faulty o2 sensor, or a failing catalytic converter.

What is the most common reason for check engine light?

Replacing a faulty oxygen sensor — a sensor used to optimize a vehicle’s fuel-to-air mixture to increase gas mileage and reduce emissions — is the most common cause for a check engine light.

How do you reset the check engine light on a Chevy Impala?

To reset the check engine light in your 2015 Chevy impala vehicle, try disconnecting the battery cables for 10-15 minutes and then reconnecting them, or turn your ignition key to the “on” and then “off” position twice, followed by starting the engine and the light should disappear.