Caution / Notice / Hint
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. 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.
- Vehicle Control History may be stored in the hybrid vehicle control ECU assembly if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the Freeze Frame Data and Vehicle Control History can be useful for troubleshooting.
for NICKEL METAL HYDRIDE BATTERY:
Refer to VEHICLE CONTROL HISTORY [08/2020 - ]
for LITHIUM-ION BATTERY:
Refer to VEHICLE CONTROL HISTORY [08/2020 - ]
(Select Powertrain in Health Check and then check the time stamp data.)
- If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU assembly, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.
for NICKEL METAL HYDRIDE BATTERY:
Refer to VEHICLE CONTROL HISTORY [08/2020 - ]
for LITHIUM-ION BATTERY:
Refer to VEHICLE CONTROL HISTORY [08/2020 - ]
HINT:
- DTC P050B-00 may be set when the engine has the symptoms listed below. If necessary, check the trouble areas listed below.
Symptoms Factor Trouble Area Low idle speed when engine is cold
(immediately after engine start)Excessive engine friction Engine oil deterioration 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 be helpful in determining whether the vehicle was moving or stationary, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.