DTC P0710-855: Transmission Fluid Temperature Sensor "A" Circuit; DTC P0712-856: Transmission Fluid Temperature Sensor "A" Circuit Low Input; DTC P0713-857: Transmission Fluid Temperature Sensor "A" Circuit High Input: Description

The transmission fluid temperature sensor, which is installed in the valve body, is used to detect the fluid temperature of the transmission fluid pressure control circuit. The sensor signal is used by the hybrid vehicle control ECU to determine transmission fluid temperature.
Characteristics of the thermistor resistance (reference values) are as follows.

Terminal	THO (with connector disconnected)	Resistance	Transmission Fluid Temperature
THO - E2	4.5 to 5.5 V	5.0 to 8.0 kΩ	Approximately 50°F (10°C)
THO - E2	4.5 to 5.5 V	0.22 to 0.28 kΩ	Approximately 230°F (110°C)

DTC No.	INF No.	DTC Detection Condition	Trouble Area
P0710	855	Malfunction in the transmission fluid temperature sensor circuit (value is not stable)	Wire harness or connector Transmission wire (transmission fluid temperature sensor) Hybrid vehicle control ECU
P0712	856	Malfunction in the transmission fluid temperature sensor circuit (short circuit)	Wire harness or connector Transmission wire (transmission fluid temperature sensor) Hybrid vehicle control ECU
P0713	857	Malfunction in the transmission fluid temperature sensor circuit (open circuit)	Wire harness or connector Transmission wire (transmission fluid temperature sensor) Hybrid vehicle control ECU