Monitor Description
WARNING: This page is about a different car, the 2025 Toyota Highlander, 2024 Toyota Highlander, and 2023 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
When an open or short to ground in the solenoid (SLU) valve circuit is detected, the ECM will determine that there is a malfunction, illuminate the MIL and store this DTC.