DTC Advanced Diagnostics: P0714
DTC P0714:CVT Fluid Temperature Sensor (Intermittent Failure)

General Description


The transmission fluid temperature sensor is a thermistor type sensor that changes resistance according to the change in transmission fluid temperature. The transmission control module (TCM) sends a 5 V reference signal to the sensor through a pull-up resistor. When the transmission fluid temperature is low, the sensor resistance increases and the TCM detects a high signal voltage. As the transmission fluid temperature rises, the sensor resistance decreases and the TCM detects a low signal voltage. When the engine is stopped and enough time has passed, the transmission fluid temperature will equalize to the engine coolant temperature. When the temperature in the transmission fluid temperature sensor deviates from the temperature in engine coolant temperature (ECT) sensor 2 after the engine is stopped and enough time has passed, the TCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type
Execution
Once per driving cycle
Sequence
P0111, P0112, P0113, P0116, P0117, P0118, P011A, P011B, P0125, P0128, P2183, P2184, P2185 are judged as OK
Duration
10 seconds or more
DTC Type
Two drive cycles, MIL on, Shift position indicator blinks

Enable Conditions
Condition
Minimum
Maximum
Elapsed time after the vehicle condition is turned to the OFF (LOCK) mode
6 hours
–
Other
Not to be towed during engine stop

Malfunction Threshold
The temperature in the transmission fluid temperature sensor deviates from the temperature in ECT sensor 2, less than -43 °F (-24 °C) or greater than 57 °F (32 °C)*.

*: Greater than 108 °F (60 °C) if engine block heater is equipped.

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.
Transmission fluid temperature sensor failure
TCM internal circuit failure

Confirmation Procedure
Operating Condition
1.
Turn the vehicle to the OFF (LOCK) mode in P position/mode, and wait for at least 6 hours.
2.
Start the engine in P position/mode, and wait for at least 10 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 TCM memory. If the malfunction returns in the next (second) drive cycle, the MIL comes on, the shift position indicator blinks, and a Confirmed DTC and the freeze data are stored.

Conditions for clearing the DTC
The shift position indicator comes off by turning the vehicle to the OFF (LOCK) mode. The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command.