Kia Optima persistent check engine light due to repeated misfires in cylinders 2 and 3 with loss of power issues on Kia Optima

Submitted by TomCa · Jun 23, 2025
Published by RepairPal

Problem overview

Some Kia Optima owners report experiencing persistent check engine lights due to repeated misfires in cylinders 2 and 3, which are often accompanied by a noticeable loss of power. These misfires may indicate underlying issues with ignition components or fuel delivery specific to those cylinders. The loss of power can significantly affect engine performance, leading to problems with acceleration and the overall driving experience. Many owners find it essential to conduct a thorough diagnostic check to accurately identify the causes of these misfires and the associated power loss, which may stem from faulty spark plugs, ignition coils, fuel injectors, or air-fuel mixture issues. Seeking professional assistance from certified technicians is recommended for accurate diagnostics and necessary repairs. Timely resolution of these issues is crucial to prevent further engine damage and avoid costly repairs in the future.

11 people reported this problem
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Kia Optima vehicles with this problem

Average mileage: 37,000 miles
(15,000 - 53,000)

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