DTC P0711 Transmission Fluid Temperature Sensor "A" Performance: Description

WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.

The ATF (Automatic Transmission Fluid) temperature sensor converts the fluid temperature into a resistance value which is input to the ECM.

The sensor resistance changes with the transmission fluid temperature. As the temperature rises, the sensor resistance decreases. The ECM applies a voltage to the temperature sensor through ECM terminal THO1, and the ECM calculates the fluid temperature based on the voltage signal.

HINT:

The ATF temperature is likely to increase under conditions such as towing, climbing hills and in traffic.
When the ATF temperature sensor is normal, the transmission locks up in 4th gear with the shift lever in the D position and in 3rd gear with the shift lever in the 3rd position.

DTC DETECTION CONDITION CHART

DTC No.	DTC Detection Condition	Trouble Area
P0711	Either of the following Condition (A) or (B) is met: Condition (A): All of (a), (b) and (c) are detected (2-trip detection logic): Intake air and engine coolant temperatures are more than -10°C (14°F) at engine start. After normal driving for over 4 minutes and 5.6 miles (9 km) or more, ATF temperature is less than 10°C (50°F). 19 minutes or more have elapsed after engine start. Condition (B): Both (a) and (b) are detected (2-trip detection logic) Engine coolant temperature is less than 35°C (95°F) at engine start. ATF temperature is 100°C (212°F) or more when engine coolant temperature reaches 60°C (140°F).	ATF level Transmission wire (ATF temperature sensor) ECM

DTC No.

DTC Detection Condition

Trouble Area

P0711

Either of the following Condition (A) or (B) is met:

Condition (A):

All of (a), (b) and (c) are detected (2-trip detection logic):

Intake air and engine coolant temperatures are more than -10°C (14°F) at engine start.
After normal driving for over 4 minutes and 5.6 miles (9 km) or more, ATF temperature is less than 10°C (50°F).
19 minutes or more have elapsed after engine start.

Condition (B):
Both (a) and (b) are detected (2-trip detection logic)

Engine coolant temperature is less than 35°C (95°F) at engine start.
ATF temperature is 100°C (212°F) or more when engine coolant temperature reaches 60°C (140°F).

ATF level
Transmission wire (ATF temperature sensor)
ECM