DTC B2277: Detecting Vehicle Submersion [08/2015 - 08/2019]: Description

This DTC is stored when a malfunction in the submersion monitor circuit inside the power management control ECU is detected.

HINT: 

When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) battery terminal, the power source mode is reset to on (IG). When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.