DTC P0190-11: Fuel Rail Pressure Sensor "A" Circuit Short to Ground [12/2023 - ]: Description

WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.

The fuel pressure sensor is installed on the delivery pipe. The fuel pressure sensor (for high pressure side) changes the fuel pressure into an electrical signal and sends the signal to the ECM. If the sensor output stops, the ECM will stop the fuel (engine room side) pump assembly (for high pressure side) and supply fuel using the fuel pump (for low pressure).

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DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	DTC Output from	Priority	Note
P0190-11	Fuel Rail Pressure Sensor "A" Circuit Short to Ground	Open or short in fuel pressure sensor (for high pressure side) circuit for 3 seconds or more (1 trip detection logic)	Open or short in fuel pressure sensor (for high pressure side) circuit Fuel pressure sensor (for high pressure side) ECM	Comes on	Engine	A	SAE Code: P0192

HINT:

When a DTC is output, check the Data List item "Fuel Pressure (High)" using the GTS.

Refer to DATA LIST / ACTIVE TEST [12/2023 - ]

DTC No.	Fuel Pressure (High)	Malfunction
P0190-11	Approximately 0 kPag	Short in PR circuit to ground Short in PR circuit to EPR circuit Open in VCPR circuit

If the Data List displays a normal value, the normal value may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.