P0712 – Transmission Fluid Temperature Sensor Circuit Low

Welcome to our article on the P0712 code, which pertains to the transmission fluid temperature sensor circuit. In this section, we will provide an overview of what this code represents, its symptoms, and potential solutions for fixing it.

The transmission fluid temperature sensor plays a crucial role in monitoring the temperature of the transmission fluid. Located inside the transmission oil pan, this sensor detects any changes in temperature and sends signals to the Powertrain Control Module (PCM). The PCM then uses these signals to control the shift points in the transmission.

The P0712 code is triggered when the PCM detects a low signal from the transmission fluid temperature sensor, indicating a potential circuit short or malfunction. If left unresolved, this issue can lead to various transmission problems and may affect the overall performance of your vehicle.

Key Takeaways:

• The P0712 code relates to a low signal from the transmission fluid temperature sensor circuit.
• This sensor is responsible for monitoring the temperature of the transmission fluid.
• The code can indicate a circuit short or malfunction.
• If not addressed, it can lead to transmission problems and affect vehicle performance.
• Professional assistance may be necessary for accurate diagnosis and effective repair.

Understanding P0712, P0713, and P0714 Codes

The P0712, P0713, and P0714 codes all indicate issues with the transmission fluid temperature sensor circuit. While they arise from transmission problems, they are not always caused by the same issues and may have different symptoms.

The P0712 code specifically indicates a low signal from the transmission fluid temperature sensor, indicating a short circuit.

The P0713 code, on the other hand, indicates higher transmission fluid temperatures. This may be due to a faulty transmission fluid temperature sensor or other issues within the transmission system.

The P0714 code indicates that the temperature measured by the transmission fluid temperature sensor is either above or below the range specified by the vehicle manufacturer. This could be a result of sensor malfunction or incorrect temperature readings.

The Powertrain Control Module (PCM) plays a crucial role in monitoring and interpreting the signals from the transmission fluid temperature sensor. It uses these signals to adjust shift points and optimize transmission performance.

“The P0712, P0713, and P0714 codes help technicians identify and troubleshoot problems related to the transmission fluid temperature sensor circuit. Understanding the different codes and their specific indications is essential for accurate diagnosis and effective repairs.”

To illustrate the differences between these codes, let’s take a closer look:

Key Takeaways:

• The P0712, P0713, and P0714 codes are related to issues with the transmission fluid temperature sensor circuit.
• P0712 indicates a low signal, P0713 indicates high temperatures, and P0714 indicates intermittent readings.
• The Powertrain Control Module (PCM) plays a crucial role in monitoring and interpreting these signals.

Understanding these codes is essential for diagnosing and resolving transmission problems accurately.

Symptoms and Causes of P0712 Code

The P0712 code can manifest itself through various symptoms that indicate potential issues with the transmission fluid temperature sensor and related components. Recognizing these symptoms and understanding their underlying causes can help in diagnosing and resolving the problem effectively.

P0712 Code Symptoms:

• An illuminated check engine light
• Improper torque converter clutch operation
• Harsh or delayed shifts
• The vehicle being stuck in limp mode

“An illuminated check engine light, improper torque converter clutch operation, harsh or delayed shifts, and the vehicle being stuck in limp mode are common symptoms of the P0712 code.”

These symptoms indicate that the vehicle’s transmission system is experiencing some difficulties, which can affect its overall performance and drivability.

Possible Causes of P0712 Code:

• A faulty transmission fluid temperature sensor
• Transmission problems, such as low fluid levels or internal damage
• Wiring problems, including loose connections or damaged wires
• A faulty Powertrain Control Module (PCM)

“The P0712 code can be triggered by a faulty transmission fluid temperature sensor, transmission problems, wiring problems, or a defective PCM.”

It is important to visually inspect the transmission fluid temperature sensor and wiring for any signs of damage or loose connections. A thorough inspection can help identify any potential issues with these components. Additionally, conducting tests to measure the sensor’s resistance and checking the circuit for voltage abnormalities can help pinpoint the exact cause of the P0712 code.

Diagnosing and Repairing P0712 Code

Diagnosing and repairing the P0712 code can be a multi-step process. By following these steps, you can identify and resolve the underlying issue with the transmission fluid temperature sensor circuit. Here’s what you need to do:

1. Start by visually inspecting the transmission fluid temperature sensor and its corresponding wiring. Look for any signs of damage, such as frayed wires or loose connections. If any issues are found, repair them promptly to ensure proper functionality.
2. Once the visual inspection is complete, clear the P0712 code from the Powertrain Control Module (PCM). After clearing the code, observe if it returns. If the code does not reappear, the repairs made during the visual inspection may have resolved the issue.
3. If the P0712 code persists, further diagnosis is necessary. Use a scan tool to monitor the transmission temperature sensor data parameter. Observe the values displayed on the scan tool and compare them to the expected range of temperatures. If the values are abnormal or inconsistent, the transmission fluid temperature sensor may be faulty.
4. To determine if the sensor is indeed the problem, consider disconnecting it and monitoring the scan tool data again. If the values change significantly or display an error, this indicates that the transmission fluid temperature sensor is likely the culprit.
5. Next, perform resistance testing on the transmission fluid temperature sensor. This test helps determine if the internal resistance of the sensor falls within the specified range. Consult the vehicle’s service manual for the specific resistance values to compare against.
6. If the sensor passes the resistance test, it’s time to focus on the circuit itself. Perform circuit testing to ensure there is continuity and that all connections are secure. Use a multimeter to measure resistance along the circuit and inspect for any potential wiring issues.
7. If all the tests indicate that the sensor and circuit are functioning correctly, the problem may lie within the Powertrain Control Module (PCM). At this point, it is advisable to consult with a professional technician or seek assistance from an authorized service center.

Properly diagnosing and repairing the P0712 code requires attention to detail and the use of appropriate diagnostic tools. While some DIY enthusiasts may attempt these steps, it is crucial to exercise caution and seek professional assistance if needed.

Here is a helpful table summarizing the diagnostic and repair steps:

Conclusion

In conclusion, the P0712 code indicates a problem with the transmission fluid temperature sensor circuit. This code can be triggered by various issues such as a faulty sensor, wiring problems, or even a malfunctioning PCM. To accurately diagnose and repair the P0712 code, it is crucial to perform visual inspections, resistance testing, and circuit testing. In some cases, it may be necessary to check the transmission itself for any underlying problems.

It is highly recommended to seek professional assistance for the diagnosis and repair of the P0712 code. A qualified technician will have the expertise and specialized tools required to accurately identify the root cause of the issue. They can provide the necessary repairs or replacements to ensure the proper functioning of the transmission fluid temperature sensor circuit.

If professional assistance is not available, there is an alternative solution to permanently remove the P0712 code. This involves uploading the Engine Control Unit (ECU) file to a portal. However, it is important to note that this solution should only be considered as a last resort, as it does not address potential underlying issues that may be present.