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.
The ECM monitors the No. 1 turbo pressure sensor voltage and uses this value to calculate the intake manifold pressure. When the No. 1 turbo pressure sensor output voltage deviates from the normal operating range, the ECM interprets this as a malfunction in the No. 1 turbo pressure sensor circuit, illuminates the MIL and stores a DTC.
Example:
If the No. 1 turbo pressure sensor output voltage is less than 0.9 V for 3 seconds or more, the ECM stores this DTC.