A check engine light may be illuminated due to a vacuum or emissions leak which can be as simple as a loose gas cap. In the 2017 Chevy Equinox, more serious reasons include a faulty O2 sensor or a failing catalytic converter. An O2 sensor often needs to be replaced if You suddenly notice a drop in fuel economy. It's responsible for monitoring the amount of unburned oxygen in the exhaust and conversely provides a key piece of data to the engine's combustion system in deterMINIng its air/fuELRatio. The cat helps transform carbon monoxide into carbon dioxide and can become clogged and d***y over time. When the ECU senses imbalanced emission readings, the "check engine" light will be illuminated.
Lora W.
April 10, 2020
The engine light may illumine in your 2017 chevy equinox if the fuel or oil pressure is low in your vehicle or the battery is beginning to fail. It could also indicate a blown gasket head which is considered an emergency and will often cause the car to emit white smoke and overheat.
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