Caution / Notice / Hint
WARNING: This page is about a different car, the 2024 Lexus TX 500h. 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.
Refer to VEHICLE CONTROL HISTORY [09/2023 - ]
(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.
Refer to VEHICLE CONTROL HISTORY [09/2023 - ]
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 |
|
| Rough idle when engine is cold (immediately after engine start) |
Abnormal combustion | Fuel quality |