Monitor Description
WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
This DTC is stored when an open or short is detected in the vacuum regulating valve assembly circuit. When an excessively high or low duty cycle malfunction occurs in the vacuum regulating valve assembly during vacuum regulating valve assembly drive, the ECM illuminates the MIL and store this DTC.