P0713 – Transmission Fluid Temperature Sensor Circuit High

The P0713 trouble code is related to the transmission fluid temperature sensor circuit high. It indicates that the transmission control module (TCM) has detected a high voltage signal from the transmission fluid temperature sensor, indicating that the transmission fluid is too hot. Common causes of this issue include a faulty temperature sensor, wiring problems, or transmission issues.

Symptoms of the P0713 code include an illuminated check engine light, harsh shifting, limp mode activation, and irregular torque converter clutch operation. To diagnose and fix the P0713 code, visual inspection of the sensor and wiring should be conducted, followed by preliminary circuit testing and testing of the temperature sensor. If necessary, repairs should be made to the sensor, wiring, or transmission components.

Key Takeaways:

• The P0713 code indicates a high voltage signal from the transmission fluid temperature sensor.
• Common causes of the P0713 code include a faulty temperature sensor, wiring issues, or transmission problems.
• Symptoms of the P0713 code include an illuminated check engine light, harsh shifting, limp mode activation, and irregular torque converter clutch operation.
• To diagnose the P0713 code, visual inspection, circuit testing, and sensor testing may be necessary.
• Repairs should be made to address any identified issues with the sensor, wiring, or transmission components.

Causes of the P0713 Code

The P0713 code can be triggered by various factors. The most common causes include a malfunctioning transmission fluid temperature (TFT) sensor, wiring issues, and transmission problems.

“The TFT sensor may be faulty and sending a high voltage signal, indicating a high transmission fluid temperature. Wiring problems, such as open circuits or short circuits, can also cause the code to be triggered. Finally, issues with the transmission itself, such as a damaged sensor or internal problems, can lead to the P0713 code.”

To better understand the causes, let’s take a closer look at each one:

TFT Sensor

The transmission fluid temperature (TFT) sensor plays a crucial role in monitoring the temperature of the transmission fluid. If the sensor malfunctions and sends a high voltage signal, it may falsely indicate a high transmission fluid temperature, triggering the P0713 code.

Wiring Problems

Faulty wiring can also cause the P0713 code to be triggered. Open circuits or short circuits in the wiring can disrupt the accurate transmission of signals, leading to erroneous temperature readings and the activation of the code.

Transmission Issues

In some cases, the P0713 code may be the result of underlying transmission problems. Damaged sensors or internal issues within the transmission can affect the accurate measurement of the transmission fluid temperature, leading to the activation of the code.

By identifying these potential causes, technicians can effectively troubleshoot and address the P0713 code, ensuring proper functioning of the transmission system.

Symptoms of the P0713 Code

The P0713 code is often accompanied by several symptoms that can indicate a problem with the transmission fluid temperature sensor. These symptoms include:

• Check engine light: The illuminated check engine light is a common indication of the P0713 code. It serves as a warning that there is a malfunction in the transmission fluid temperature sensor circuit.
• Harsh shifting: If you notice rough or harsh shifting while driving, it could be a symptom of the P0713 code. The transmission control module may try to compensate for the high temperature reading by adjusting the shifting patterns, resulting in a harsh or delayed shift.
• Limp mode activation: In some cases, the vehicle may go into limp mode when the P0713 code is present. Limp mode is a safety feature that limits the vehicle’s function and performance in order to protect the transmission from further damage.
• Torque converter clutch operation: Irregular torque converter clutch operation can be another symptom of the P0713 code. The torque converter clutch may not engage or disengage properly, leading to poor vehicle performance and reduced fuel efficiency.

Examples:

“I noticed that my check engine light came on, and I experienced jerky and harsh shifting while driving. The car also seemed to struggle when accelerating. After getting the diagnostic scan, it turned out that the P0713 code was triggered by a faulty transmission fluid temperature sensor.”

“My car suddenly went into limp mode while I was driving on the highway. I couldn’t accelerate properly, and the vehicle felt sluggish. When I had the code checked, it was revealed that the P0713 code was present, indicating an issue with the transmission fluid temperature sensor.”

These symptoms of the P0713 code should not be ignored, as they can indicate potential problems with the transmission system. If you experience any of these symptoms, it is recommended to have your vehicle diagnosed and repaired by a qualified mechanic.

Diagnosing the P0713 Code

To diagnose the P0713 code, several steps can be taken. First, a visual inspection should be conducted to check for any visible issues with the transmission fluid temperature sensor or its wiring. Any loose connections, damaged wires, or sensor problems should be addressed.

Next, preliminary circuit testing can be performed, using a scan tool to monitor the TFT sensor data and check for any anomalies. This will help identify any irregularities in the sensor’s output that could be causing the high voltage signal. By comparing the actual sensor data with expected values, you can determine if the sensor is malfunctioning.

If necessary, the temperature sensor should be tested using a multimeter to measure resistance. This test can help determine if the sensor is within the expected range of values. A resistance reading that is significantly higher or lower than the expected values may indicate a faulty sensor that needs to be replaced.

Finally, a circuit check should be done to ensure that the reference voltage and ground connections are functioning properly. This involves testing the voltage supply and the ground connection for the sensor to ensure they are within the accepted range. Any issues with the circuit should be addressed by repairing or replacing the necessary components.

By following these diagnostic steps, you can pinpoint the cause of the P0713 code and take the necessary steps to fix the issue.

Fixing the P0713 Code

Once the issue causing the P0713 code has been diagnosed, appropriate repairs can be made to resolve the problem. A step-by-step approach should be followed to ensure an efficient and effective fix.

1. Visual Inspection

Begin by conducting a thorough visual inspection of the transmission fluid temperature sensor and its wiring. Look for any visible signs of damage, such as frayed wires, loose connections, or corroded terminals. It’s important to address any identified issues promptly to prevent further complications. If necessary, repair or replace the sensor or wiring components that are causing the problem.

2. Circuit Testing

After the visual inspection, conduct circuit testing to verify the integrity of the transmission fluid temperature sensor circuit. Use a digital multimeter to measure the voltage and resistance at various points in the circuit. Compare the readings to the manufacturer’s specifications to determine if there are any abnormalities or faults. This step helps identify any underlying electrical issues that may be causing the P0713 code.

3. TFT Sensor Replacement

If the visual inspection and circuit testing indicate a faulty transmission fluid temperature (TFT) sensor, it will need to be replaced. Ensure that you acquire a compatible replacement sensor from a reputable source. Carefully remove the old sensor and install the new one in its place. Take note of any specific installation instructions provided by the manufacturer to ensure proper functionality.

4. Wiring Repairs

If wiring problems are detected during the visual inspection or circuit testing, it is crucial to address them promptly. Repair or replace any damaged or faulty wiring to restore proper electrical connections. Use high-quality wiring components and follow proper wiring practices to ensure a reliable and long-lasting repair.

5. Transmission Repairs

In some cases, the P0713 code may be a result of underlying transmission problems. If all previous steps have been completed and the code still persists, it may be necessary to inspect and repair the transmission system. Consult a professional or a qualified technician with expertise in transmission repairs to accurately diagnose and resolve any mechanical issues that may be contributing to the P0713 code.

Once the necessary repairs have been made, it is important to clear the trouble code from the vehicle’s computer system using a diagnostic scan tool. Clearing the code allows the system to reset and monitor the transmission fluid temperature sensor readings for accurate operation. Finally, perform thorough testing to ensure that the repairs have effectively resolved the P0713 code and that the transmission is functioning optimally.

Additional Diagnostic Codes Related to P0713

When dealing with the P0713 code, it’s important to consider other diagnostic codes that may be related to the issue. These additional codes can provide valuable insights into the specific problem causing the P0713 code. Below are some diagnostic codes that are commonly associated with P0713:

• P0710: Transmission Fluid Temperature Sensor Circuit Malfunction
• P0711: Transmission Fluid Temperature Sensor Range/Performance
• P0712: Transmission Fluid Temperature Sensor Circuit Low Input
• P0714: Transmission Fluid Temperature Sensor Circuit Intermittent

These codes, like P0713, are related to the transmission fluid temperature sensor or other transmission components. They can help identify additional issues or abnormalities in the transmission system. If any of these codes are present along with the P0713 code, it’s crucial to address and resolve them as well to ensure a comprehensive repair.

Conclusion

In conclusion, the P0713 code indicates a problem with the transmission fluid temperature sensor circuit high. This issue can be caused by a faulty sensor, wiring problems, or transmission malfunctions. When this code is triggered, symptoms such as an illuminated check engine light, harsh shifting, limp mode activation, and irregular torque converter clutch operation may occur.

To diagnose and resolve the P0713 code, a series of troubleshooting steps should be followed. This includes conducting a thorough visual inspection to identify any visible issues with the temperature sensor or its wiring. Circuit testing should also be performed using a scan tool to monitor the data from the sensor and check for any abnormalities. Additionally, testing the temperature sensor itself with a multimeter can help determine if it is functioning properly.

If any issues are identified during the diagnostic process, appropriate repairs should be made. This may involve replacing the faulty temperature sensor, repairing any wiring problems, or addressing transmission-related issues. Once the necessary repairs have been completed, it is essential to clear the code and test the vehicle to ensure that the problem has been resolved.

In summary, addressing the P0713 code requires careful troubleshooting and repair steps to tackle the transmission fluid temperature sensor circuit high issue. By following these steps, it is possible to identify and resolve the underlying problems, ensuring proper functionality and performance of the transmission system.