The P0713 diagnostic trouble code (DTC) indicates that the Transmission Fluid Temperature (TFT) sensor is reporting a voltage that’s too high for the expected range. When the voltage is high, the Transmission Control Module (TCM) assumes the fluid is extremely hot—often over 300°F (150°C)—and activates protection mode.

This problem is frequently seen in BMW X5, Ford F-150, Mercedes C-Class, Nissan Rogue, and Honda Accord. If your scan tool shows a P0713 and your car is in limp mode, using the iCarsoft CR PRO S can help confirm the exact cause and clear the code safely after repair.

🔍 What Does P0713 Mean?

The TFT sensor monitors the temperature of the transmission fluid to ensure optimal shifting and protection. If the signal voltage from this sensor is too high—typically above 4.9 volts—the TCM interprets it as a Transmission Fluid Temperature Sensor Circuit High Input condition and sets code P0713. In reality, this usually means the circuit is shorted to voltage or the sensor has failed internally.

⚠️ Common Symptoms of P0713

• Check Engine Light or Transmission Warning Light
• Transmission stuck in one gear (limp mode)
• Harsh or delayed shifting when fluid gets warm
• Live data shows extreme temperatures (300°F+)
• Poor fuel economy and sluggish acceleration

🧰 Causes of P0713 Code

• Short to power in the TFT sensor circuit
• Defective Transmission Fluid Temperature Sensor
• Corroded or loose sensor connector pins
• Wiring harness melted against exhaust components
• Faulty Transmission Control Module (rare)

🔧 How to Diagnose and Fix P0713 with iCarsoft CR PRO S

The iCarsoft CR PRO S makes it easy to confirm whether the Transmission Fluid Temperature Sensor Circuit High Input is due to wiring, sensor, or TCM issues. Here’s a step-by-step process for DIY technicians:

1. Connect the iCarsoft CR PRO S to the OBD-II port.
2. Select the correct vehicle and enter the Transmission Control Module.
3. Read stored DTCs and confirm P0713 is present.
4. Go to Live Data → Transmission Fluid Temperature.
5. If the reading shows constant high values (over 280°F) from a cold start, it indicates a short to power.
6. Unplug the TFT sensor and see if voltage drops—if yes, the sensor is bad; if not, inspect the wiring for a short.
7. Replace the sensor if necessary and use CR PRO S to clear the code.
8. Verify normal readings (usually 80–180°F when warm).

🧠 Example Case – Ford F-150 P0713

A 2015 Ford F-150 came in with a P0713 code and a rough shift pattern after highway driving. Using iCarsoft CR PRO S, live data showed the transmission fluid temperature stuck at 311°F. Inspection revealed melted insulation on the sensor harness near the catalytic converter. After repairing the shorted wire and replacing the sensor, the temperature readings stabilized and normal shifting was restored.

💡 Pro Tips for P0713 Diagnosis

• Compare the transmission temperature reading to the engine coolant temp—if it’s vastly higher at cold start, suspect electrical issues.
• Check the connector seal; water intrusion can cause corrosion and false readings.
• Use OEM replacement sensors to ensure proper calibration.
• After replacing the sensor, always reset transmission adaptations with CR PRO S.
• Keep an eye on fluid condition—burnt or dark fluid indicates overheating that could trigger related codes like P0710 or P0712.

❓ FAQ: P0713 Transmission Fluid Temperature Sensor Circuit High Input

• Can I drive with code P0713?
  Driving short distances may be possible, but limp mode will reduce performance. Continued driving can cause transmission overheating.
• What causes P0713 to appear after replacing the sensor?
  If the code returns immediately, inspect wiring harness continuity. Shorts to voltage are more common than defective new sensors.
• How to fix P0713 transmission fluid temperature high input?
  Replace the TFT sensor if it’s faulty, repair damaged wiring, and clear the code with a scan tool.
• Which tool can read transmission temperature data?
  The iCarsoft CR PRO S provides real-time TFT readings and system reset functions.

📘 Final Thoughts

The P0713 Transmission Fluid Temperature Sensor Circuit High Input code may seem intimidating, but with the iCarsoft CR PRO S, you can quickly pinpoint whether it’s a simple wiring short or sensor issue. Regular transmission maintenance and periodic live data checks prevent recurrence and ensure long-term reliability.