DTC P0714

DTC P0714:  CVT Fluid Temperature Sensor (Intermittent Failure)

General Description 

Courtesy of HONDA, U.S.A., INC.

Courtesy of HONDA, U.S.A., INC.

The transmission fluid temperature sensor is a thermistor type sensor that changes resistance according to the change in transmission fluid temperature. The powertrain control module (PCM) 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 PCM detects a high signal voltage. As the transmission fluid temperature rises, the sensor resistance decreases and the PCM 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 PCM detects a malfunction and stores a DTC.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status 

Execution	Once per driving cycle
Sequence	P0111, P0112, P0113, P0116, P0117, P0118, P011A, P0125, P0128, P2183, P2184, P2185 are judged as OK
Duration	10 seconds or more
DTC Type	Two drive cycles, MIL off, A/T gear position indicator blinks
OBD Status	PASSED/FAILED/NOT COMPLETED (STILL TESTING)

Enable Conditions 

Condition	Minimum	Maximum
Elapsed time after the vehicle condition is turned to the OFF (LOCK) mode	6 hours	-
12 volt battery voltage [Battery Voltage]	11 V	-
No active DTCs set (prevents monitor from running)	P0117, P0118, P0711, P0712, P0713, P2184, P2185
Other	Not to be towed during engine stop

[ ]: HDS Parameter

Malfunction Threshold 

The temperature in the transmission fluid temperature sensor deviates from the temperature in ECT sensor 2, less than -11 deg. F (-24 deg. C) or greater than 90 deg. F (32 deg. C)*.

*: Greater than 140 deg. F (60 deg. 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
• PCM internal circuit failure

Confirmation Procedure 

Operating Condition 

• Turn the vehicle to the OFF (LOCK) mode in P, and wait for at least 6 hours.
• Start the engine in P, 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 PCM memory. If the malfunction returns in the next (second) drive cycle, a Confirmed DTC and the freeze data are stored. The MIL does not come on.

Conditions for clearing the DTC 

The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the 12 volt battery.