DTC P0712: Transmission Fluid Temperature Sensor "A" Circuit Low Input; DTC P0713: Transmission Fluid Temperature Sensor "A" Circuit High Input [12/2013 - 10/2017]: Description

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The Automatic Transmission Fluid (ATF) temperature sensor converts the fluid temperature into a resistance value for use by the ECM.

Fig 1: Automatic Transmission Fluid (ATF) Temperature Sensor Graph

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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 becomes higher, the sensor resistance decreases.

One terminal of the sensor is grounded so that the sensor resistance decreases and the voltage goes down as the temperature becomes higher.

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

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P0712	Transmission Fluid Temperature Sensor "A" Circuit Low Input	ATF temperature sensor resistance is less than 79 Ω for 0.5 sec. or more (1-trip detection logic).	Short in ATF temperature sensor circuit Transmission wire (ATF temperature sensor) Wiring harness connector ECM	Comes on	DTC stored
P0713	Transmission Fluid Temperature Sensor "A" Circuit High Input	ATF temperature sensor resistance is more than 156 kΩ for 0.5 seconds or more, and either of the following conditions is met (1-trip detection logic): Condition (A): 314 seconds or more have elapsed after the engine start when engine coolant temperature or intake air temperature is -29.375°C (-20.875°F) or less. Condition (B): 10 seconds or more have elapsed after the engine start when engine coolant temperature and intake air temperature are more than -29.375°C (- 20.875°F).	Open in ATF temperature sensor circuit Transmission wire (ATF temperature sensor) Wiring harness connector ECM	Comes on	DTC stored