DTC P2610: ECM / PCM Internal Engine Off Timer Performance: Description
WARNING: This page is about a different variant/trim than selected.
The soak timer operates after the ignition switch is turned off. When a certain amount of time has elapsed after turning the ignition switch off, the soak timer activates the ECM to perform malfunction checks which can only be performed after the engine is stopped. The soak timer is built into the ECM.