DTC Advanced Diagnostics: P0711
DTC P0711:ATF Temperature Sensor (Range/Performance)

General Description


The ATF temperature sensor is a thermistor type sensor that changes resistance according to the change in ATF temperature. The powertrain control module (PCM) sends a 5 V reference signal to the sensor through a pull-up resistor. When the ATF temperature is low, the sensor resistance increases and the PCM detects a high signal voltage. As the ATF temperature rises, the sensor resistance decreases and the PCM detects a low signal voltage. If the ATF temperature sensor signal does not change, the PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status
Execution
Once per driving cycle
Sequence
None
Duration
5 minutes or more*
20 seconds or more**
DTC Type
Two drive cycles, MIL off, A/T gear position indicator blinks
OBD Status
PASSED/FAILED/NOT COMPLETED (STILL TESTING)
*: Stuck at low temperature is detected

**: Stuck at high temperature is detected

Enable Conditions
Stuck at low temperature
Condition
Minimum
Maximum
Engine coolant temperature [Engine Coolant Temperature]
158 °F (70 °C)
–
Initial engine coolant temperature [Engine Coolant Temperature]
–
95 °F (35 °C)
ATF temperature
[ATF Temperature]
–
-4 °F (-20 °C)
Initial ATF temperature
[ATF Temperature]
–
-4 °F (-20 °C)
Vehicle speed
[VEHICLE SPEED]
19 mph (30 km/h)
–
Battery voltage
[BATTERY VOLTAGE]
11 V
–
Throttle position
4 °
–
No active DTCs set (prevents monitor from running)
P0117, P0118, P0712, P0713, P0714, P0721, P0722
Other
After the engine coolant temperature [Engine Coolant Temperature] reaches the fixed value, both the vehicle speed [VEHICLE SPEED] and the throttle position meet the conditions for at least 5 minutes

Stuck at high temperature
Condition
Minimum
Maximum
Engine coolant temperature [Engine Coolant Temperature]
158 °F (70 °C)
–
Previous engine coolant temperature [Engine Coolant Temperature] when the engine start/stop button was pressed to select the OFF mode
158 °F (70 °C)
–
Previous ATF temperature
[ATF Temperature] when the engine start/stop button was pressed to select the OFF mode
230 °F (110 °C)
–
Present engine coolant temperature [Engine Coolant Temperature] when the engine start/stop button is pressed to select the ON mode
–
95 °F (35 °C)
Present ATF temperature
[ATF Temperature] when the engine start/stop button is pressed to select the ON mode
230 °F (110 °C)
–
Battery voltage
[BATTERY VOLTAGE]
11 V
–
No active DTCs set (prevents monitor from running)
P0117, P0118, P0712, P0713, P0714, P0721, P0722
[ ]: HDS Parameter

Malfunction Threshold
Stuck at low temperature

The current ATF temperature [ATF Temperature] is -4 °F (-20 °C) or less after Enable Conditions.

Stuck at high temperature

The current ATF temperature [ATF Temperature] is 230 °F (110 °C) or more after Enable Conditions.

Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
ATF temperature sensor failure
PCM internal circuit failure

Confirmation Procedure
Operating Condition
Stuck at low temperature


1.
Start the engine with the engine coolant temperature [Engine Coolant Temperature] at 95 °F (35 °C) or less.
2.
Warm up the engine until the engine coolant temperature [Engine Coolant Temperature] reaches 158 °F (70 °C) or more.
3.
Drive the vehicle at a speed of 19 mph (30 km/h) or more with the throttle position at 4 ° or more for at least 5 minutes.
Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

Stuck at high temperature
1.
Turn off the engine with the engine coolant temperature [Engine Coolant Temperature] at 158 °F (70 °C) or more.
2.
Start the engine after the engine coolant temperature [Engine Coolant Temperature] drops to 95 °F
(35 °C) or less.
3.
Warm up the engine until the engine coolant temperature [Engine Coolant Temperature] reaches 158 °F (70 °C), and wait for at least 20 seconds.
With the HDS
None.

Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected during the first drive cycle, a Pending DTC is stored in the PCM memory. If the malfunction returns in the next (second) drive cycle, the A/T gear position indicator blinks and a Confirmed DTC and the freeze data are stored. The MIL does not come on.

Conditions for clearing the DTC
The A/T gear position indicator comes off by pressing the engine start/stop button to select the OFF mode. The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command.