Hyundai Genesis Coupe check engine light issue diagnosed as engine control module problem under warranty on Hyundai Genesis Coupe

Some Hyundai Genesis Coupe owners report experiencing check engine light issues potentially linked to engine control module (ECM) malfunctions. These problems can be triggered by various factors, including emissions system components, sensors, or catalytic converters. A common culprit is a faulty oxygen sensor, which can lead to decreased fuel mileage and engine hesitation. Owners are advised to take immediate action if the check engine light is flashing, as this may indicate serious motor damage. Additionally, a steady check engine light could signal less severe issues such as a loose gas cap or cylinder misfire. It is crucial for owners to address these warnings promptly, as neglecting a flashing check engine light may result in more significant engine problems. For those diagnosing an ECM issue under warranty, verifying coverage and consulting a professional technician for proper repairs is essential to maintain warranty compliance.