DTC P0115-2A: Engine Coolant Temperature Sensor 1 Signal Stuck in Range [10/2022 - 08/2023]: Description

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.

Refer to DTC P0115-11.

Refer to DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	DTC Output from	Priority	Note
P0115-2A	Engine Coolant Temperature Sensor 1 Signal Stuck in Range	Either of the following conditions is met (2 trip detection logic): When engine is started cold and warmed up, the engine coolant temperature sensor value does not change. After the warmed up engine is stopped and then next cold engine start is performed, the engine coolant temperature sensor value does not change.	Water inlet with thermostat sub-assembly Engine coolant temperature sensor	Comes on	Engine	B	SAE Code: P0116 DTC for Mexico Models: Applies