DTC P0710-00: Transmission Fluid Temperature Sensor "A" Circuit Range/Performance [10/2022 - ]: 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.

The ATF temperature sensor converts the automatic transaxle fluid (ATF) temperature into a resistance value for use by the ECM.

The ECM applies a voltage to the temperature sensor through terminal THO1 of the ECM.

The sensor resistance changes with the ATF temperature. As the temperature rises, the sensor resistance decreases.

One terminal of the sensor is grounded so that the sensor resistance and voltage decrease as the temperature rises.

The ECM calculates the ATF temperature based on the voltage signal.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	DTC Output from	Priority	Note
P0710-00	Transmission Fluid Temperature Sensor "A" Circuit Range/Performance	Either of the following condition is met (2-trip detection logic): Certain monitor enabling conditions are met and the ATF temperature is below 20°C (68°F). for Mexico Models: Certain monitor enabling conditions are met and the ATF temperature is 110°C (230°F) or higher. except Mexico Models: Certain monitor enabling conditions are met and the ATF temperature is 100°C (212°F) or higher.	Transmission wire (ATF temperature sensor) ATF temperature sensor circuit ECM	Comes on	Transmission	B	SAE Code: P0711

DTC DETECTION CONDITION PATTERNS:

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnostic Condition	Certain monitor enabling conditions are met.	◦	◦
Malfunction Condition	The ATF temperature is below 20°C (68°F).	◦	-
	for Mexico Models: The ATF temperature is 110°C (230°F) or higher.	-	◦
	except Mexico Models: The ATF temperature is 100°C (212°F) or higher.	-	◦
Duration		3 seconds or more	3 seconds or more
Detection Logic		2-trip detection logic	2-trip detection logic

HINT:

This DTC is stored when either of the above detection patterns is met.