Monitor Strategy

WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.

Related DTCs	P0125: Insufficient engine coolant temperature for closed loop fuel control
Required Sensors/Components (Main)	Engine coolant temperature sensor Thermostat Engine cooling system
Required Sensors/Components (Related)	-
Frequency of Operation	Once per driving cycle
Duration	120 seconds: Engine coolant temperature at engine start is (closed-loop engine coolant temperature - 8.33°C [46.99°F]) or higher 300 seconds: Engine coolant temperature at engine start is (closed-loop engine coolant temperature - 19.44°C [66.99°F]) or higher and less than (closed-loop engine coolant temperature - 8.33°C [46.99°F]) 1200 seconds: Engine coolant temperature at engine start is less than (closed-loop engine coolant temperature - 19.44°C [66.99°F])
MIL Operation	2 driving cycles
Sequence of Operation	None