DTC B2277 Detecting Vehicle Submersion: Description

This DTC is output when the submersion circuit monitor inside the power source control ECU detects that the vehicle is submerged in water.

HINT:

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