DTC Summary

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.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	DTC Output from	Priority	Note
P2450-7E	Evaporative Emission System Switching Valve Actuator Stuck On	Either of the following conditions is met when fuel tank pressure is between -2 and 3 kPa(gauge) [-0.29 and 0.44 psi(gauge)]. Fuel tank pressure change when vacuum introduction for canister is higher than 0.5 kPa(gauge) [0.073 psi(gauge)] EVAP pressure when vacuum introduction for canister was complete is higher than (third reference pressure x 0.2)	Fuel vapor-containment valve Wire harness or connector (fuel vapor-containment valve - ECM) ECM	Comes on	Engine	B	SAE Code: P2450
P2451-7F	Evaporative Emission System Switching Valve Actuator Stuck Off	Either of the following conditions is met: Fuel tank pressure change when vacuum introduction for fuel tank is less than 0.5 kPa(gauge) [0.073 psi(gauge)] EVAP pressure change when fuel vapor-containment valve is open is less than 0.9 kPa(gauge) [0.131 psi(gauge)]	Fuel vapor-containment valve Wire harness or connector (fuel vapor-containment valve - ECM) ECM	Comes on	Engine	B	SAE Code: P2451

DTC No.	Monitoring Item	Detection Timing	Detection Logic	SAE Code
P2450-7E	Fuel vapor-containment valve stuck open	EVAP monitoring (ignition switch off)	2 trip	P2450
P2451-7F	Fuel vapor-containment valve stuck close	EVAP monitoring (ignition switch off)	2 trip	P2451