Monitor Description
WARNING: This page is about a different car, the 2020 Toyota Avalon and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
When the hybrid vehicle control ECU detects a low power supply voltage for the battery voltage sensor while pre-charge is occurring, it determines that there is a malfunction in the battery voltage sensor circuit. If the hybrid vehicle control ECU detects a malfunction, it will illuminate the MIL and store a DTC.