P0713: Transmission Fluid Temperature Sensor "A" Circuit High
The transmission fluid temperature sensor signal is above its normal range.
Normal risk
Usually drivable. Shifts may feel different. Have it checked soon.
Short answer · Can I keep driving with P0713?
Usually yes. The transmission uses a substitute temperature, so shifts may be firmer or the torque converter clutch may not lock. Have it checked soon.
What does P0713 mean?
P0713 means the sensor signal is above the range a working sensor produces; the control unit reads it as very cold fluid. An open circuit, an unplugged connector or a failed sensor are typical causes. The transmission uses fluid temperature to adjust shift pressure and timing and to protect itself from overheating; the sensor is often part of the internal wiring harness or the valve body.
What the car does when the code is set
The check engine light comes on. Depending on the transmission fault, shifting may be normal, harsh or delayed, or the transmission may stay in one gear (limp mode).
How the system works
An automatic transmission has its own control unit that reads speed sensors, the selector position and pressure sensors, and controls shifting through solenoids. When it detects a fault that can affect emissions, it asks the engine control unit to light the check engine lamp. Because the engine control unit stores a code for that request, a basic scanner often shows only this code, while the detailed code stays in the transmission control unit.
Common symptoms
Possible causes
Listed without ranking. The cause on your car depends on make, engine and mileage — see the maker notes below.
- Fault in the transmission control systemThis code only reports that the transmission control unit has stored its own fault.
- Low or old transmission fluidOften found together with shifting codes.
- Sensor or solenoid faultSpeed sensors, pressure solenoids and wiring.
- Communication problemBetween the engine and transmission control units.
How it is diagnosed
- Read the transmission control unitUse a scan tool that reads the transmission module: the real cause is stored there.
- Check the fluidCheck level and condition as the service data describes.
- Follow the specific codeDiagnose the code from the transmission module.
- Clear and test-driveClear codes from both modules and test-drive.
Questions about P0713
Is the sensor inside the transmission?
On most automatic transmissions, yes. It is often built into the internal harness or the solenoid pack, so replacing it means removing the transmission pan.
Why does my basic scanner only show this code?
Many simple scanners read only the engine control unit. A scanner that reads the transmission module shows the real fault code.
Is P0700 a transmission failure?
Not necessarily. It only reports that the transmission control unit stored a fault. The real code there shows what is wrong.