DTC P0234-00: Turbocharger/Supercharger "A" Overboost Condition [09/2022 - ]: Description

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2024 Lexus IS 300, 2023 Lexus IS 300, 2022 Lexus IS 300, 2021 Lexus IS 300, and 2020 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

Refer to DTC P0033-12.

Refer to DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P0234-00	Turbocharger/Supercharger "A" Overboost Condition	Either of the following conditions is met (1 trip detection logic): Boost pressure exceeds the threshold value (calculated from turbocharger speed upper limit value). Boost pressure exceeds the threshold value (calculated from compressor downstream temperature upper limit value).	Waste gate valve (turbine housing with valve sub-assembly) Waste gate valve actuator with bracket assembly Vacuum regulating valve assembly No. 2 turbo pressure sensor Mass air flow meter sub-assembly Semiconductor pwr integration ECU Wire harness or connector ECM	Does not come on	DTC stored	SAE Code: P0234 DTC for Mexico Models: Applies