DTC P2610-29: ECM/PCM Engine Off Timer Performance Signal Invalid; DTC P2610-93: ECM/PCM Engine Off Timer Performance No Operation [02/2019 - 06/2020]: Description
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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.