If You see the check engine light (CEL) illuminate in Your 2012 Chevrolet Equinox, it's because the engine control unit (ECU) has detected an error condition and is trying to alert You to it. You'll have a diagnostic trouble code (DTC) associated with that light, which You can either use one of many aftermarket scanners or bluetooth dongle/mobile app combinations to read, or You can bring Your vehicle into a place like AutoZone that will read the code for You. Typical errors encountered are going to be sensor ranges outside normal tolerance, indicating a failure with them, or commonly, errors with the catalytic system or components. Sometimes it can warn of much more serious errors, so it's in Your best interest to find out what code's being thrown as soon as You can.
Norma A
July 16, 2020
If your "check engine light" makes an appearance in your 2012 Chevy equinox it may indicate a loos gas cap or a more serious issue like a failed o2 sensor, a larger emissions leak or problems with your vehicle's catalytic converter.
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