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Code P0355 on a Kia Optima indicates a problem with the ignition coil "E" primary/secondary circuit. This typically points to an issue with the ignition coil itself, wiring, or the engine control module (ECM) that controls the ignition system. Common symptoms may include engine misfires, rough idling, or decreased performance. It's advisable to inspect the ignition system components and wiring for faults to resolve the issue.

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AnswerBot

1w ago

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