DTC P2610-2F: ECM/PCM Internal Engine Off Timer Performance: General Description
WARNING: This page is about a different car, the 2024 Kia K5. However, it is still accessible from the selected car via links, so may be relevant.
The Engine Control Module (ECM) keeps internal counting to calculate the model values related to temperature under Ignition "OFF" condition. The ECM uses this values to improve efficiency when the engine starts again.