DTC P0195-15: Engine Oil Temperature Sensor Circuit Short to Battery or Open [10/2022 - 08/2023]: Description

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

Refer to DTC P0195-11.

Refer to DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	DTC Output from	Priority	Note
P0195-15	Engine Oil Temperature Sensor Circuit Short to Battery or Open	The engine oil temperature sensor output voltage is higher than 4.94 V1 or 4.93 V2 for 5 seconds or more (1 trip detection logic).	Open or short in engine oil temperature sensor circuit engine oil temperature sensor ECM	Except Mexico Models: Comes on For Mexico Models: Does not come on	Engine	A	SAE Code: P0198 DTC for Mexico Models: Applies

*1: except Mexico Models
*2: for Mexico Models

HINT:

When this DTC is output, check the engine oil temperature in the Data List. Enter the following menus: Powertrain / Engine / Data List / Engine Oil Temperature Sensor.

DTC No.	Engine Oil Temperature Sensor	Malfunction
P0195-15	-40°C (-40°F)	Short to +B in THEO circuit Open in THEO circuit Open in EPEO circuit

If the Data List values is normal it may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.

Refer to CHECK FOR INTERMITTENT PROBLEMS [10/2022 - ]