Hyundai Check Engine Light Frequently Occurring Issues * Loose Gas Cap: Your gas cap is loose, cracked, or just missing. Other frequent causes of a check engine light include a defective oxygen sensor, a malfunctioning fuel injection component, and faulty emissions control components. To reset the Check Engine light on a Hyundai, one of the easiest methods is to briefly disconnect the battery. When the battery is reconnected, the Check Engine light should turn off and the fault When your 2019 Hyundai Veloster's ECM (electronic control module), which is the vehicle's onboard computer, finds a problem in the electronic control system that it can’t common, a computer turns on your check engine light. This amber or yellow light is continuously labeled “check engine” or “service engine soon”, or the light may be Video Description. A check engine light can indicate a broad spectrum of problems with your 2015 Hyundai Sonata. If you have a flashing check engine light, turn off the engine immediately to prevent potential motor damage. Whereas a steady check engine light may mean you merely need to tighten you gas cap next time you stop in order to reset Total Time: 5 minutes Use an OBD2 Scanner With your compatible OBD2 scanner, you can reset the Check Engine Light in a matter of seconds. If you don’t have one, we recommend checking out some of the best OBD2 scanners to purchase because this is going to be the easiest method. 1. To turn off the codes with your scanner, follow these steps: 2. A check engine light can indicate a broad spectrum of problems with your 2016 Hyundai Sonata. If you have a flashing check engine light, turn off the engine immediately to prevent potential motor damage. Whereas a steady check engine light may mean you merely need to tighten you gas cap next time you stop in order to reset the service engine The Hyundai check engine light can indicate various issues with your engine, such as a loose gas cap, a mass airflow sensor, or a catalytic converter. Learn why your Hyundai check engine light is on and how to turn it off by disconnecting your battery and reconnecting it. You can also schedule service with us near Houston to fix any problems that arise. When your 2021 Hyundai Sonata's ECM (electronic control module), which is the vehicle's onboard computer, finds a problem in the electronic control system that it can’t decent, a computer turns on your check engine light. This amber or yellow light is typically labeled “check engine” or “service engine soon”, or the light may be REFf.