DTC P262B-84: Control Module Power 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) monitors errors through checksum. Every information consists of the combination of 0 and 1, checksum means summing up all values in a row. Thus, errors are recognized comparing checksum value and the memory value at the ECM.