Caution / Notice / Hint
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 350, 2023 Lexus ES 350, 2022 Lexus ES 350, 2021 Lexus ES 350, and 2020 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Inspect the fuses for circuits related to this system before performing the following procedure.
HINT:
- DTC P050B-00 may be output when the engine has the symptoms listed below. If necessary, check the trouble areas listed below.
Symptom Factor Trouble Area Low idle speed when engine is cold (immediately after engine start) Excessive engine friction - Engine oil deterioration
- Drive belt tension
- A/C compressor
- Generator
Rough idle when engine is cold (immediately after engine start) Abnormal combustion Fuel quality - Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.