DTC P2610 ECM / PCM Internal Engine Off Timer Performance: Description
WARNING: This page is about a different variant/trim than selected.
To ensure the accuracy of the EVAP (Evaporative Emission) monitor values, the soak timer, which is built into the ECM (included in the hybrid vehicle control ECU), measures 5 hours (+/-15 minutes) from when the power switch is turned off, before the monitor begins to run. This allows the fuel to cool down, which stabilizes the Fuel Tank Pressure (FTP). When 5 hours have elapsed, the ECM turns on.