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The P2565 code found in your Kia Optima points to an issue with the Turbocharger Boost Control Position Sensor Circuit being too high. This indicates that the car's diagnostic system has detected abnormal circuitry settings related to either the catalytic converter or the turbocharger wastegate controller. The catalytic converter works to reduce the harmful emissions from your vehicle by altering their makeup before they are released into the environment. Meanwhile, the wastegate controller serves a similar purpose for turbocharged engines by redirecting noxious gases away from the turbine wheel. If there is a malfunction in either of these systems, it may be due to a B rocker arm actuator circuit being open. This malfunction triggers the car's Engine Control Module (ECM) to identify the issue and display the "P2565" trouble code, causing the check engine light to turn on. Consulting with a qualified mechanic will help pinpoint the exact problem indicated by the P2565 code and provide suggestions for necessary repairs.
In a Kia Optima, if you see Code P2565, it indicates an issue with the circuit for controlling the turbo boost position.
Issues with the electronic control unit.