DTC P0191: Fuel Rail Pressure Sensor Circuit Range / Performance [11/2021 - ]: Description

WARNING: This page is about a different car, the 2024 Lexus IS 500, 2023 Lexus IS 500, and 2022 Lexus IS 500. However, it is still accessible from the selected car via links, so may be relevant.

Refer to DTC P0192.

Refer to DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P0191	Fuel Rail Pressure Sensor Circuit Range / Performance	Either of the following conditions is met (2 trip detection logic): When target high pressure side fuel pressure changes, the change in fuel pressure sensor value is abnormal. Although engine has been stopped and left as is for a long time, high pressure side fuel pressure is higher or lower than threshold.	Fuel pressure Fuel pressure sensor Open or short in fuel pressure sensor circuit ECM	Comes on	DTC stored