How to Correct P0715 – Transmission Fluid Temperature Sensor Circuit Intermittent

If you’ve encountered the P0715 error code on your vehicle, it indicates an issue with the transmission fluid temperature sensor circuit.

This sensor plays a crucial role in monitoring the temperature of the transmission fluid, ensuring optimal performance and preventing overheating. In this guide, we will walk you through the process of correcting the P0715 error code, allowing you to address the problem effectively and get your vehicle back on the road.

Symptoms of P0715

The P0715 error code manifests itself through various symptoms, which can indicate a problem with the transmission fluid temperature sensor circuit. It’s essential to be aware of these signs to identify the issue accurately. Some common symptoms of P0715 include:

  1. Erratic shifting: You may experience irregular shifting patterns, such as delayed or harsh gear changes. This can affect the overall driving experience and potentially lead to further transmission issues if not addressed promptly.
  2. Overheating transmission: A faulty transmission fluid temperature sensor can result in inaccurate temperature readings, leading to an overheating transmission. This can cause severe damage to the transmission components and should be addressed immediately.
  3. Illuminated check engine light: When the P0715 error code is detected, the check engine light on your dashboard will illuminate. This serves as an indication that a fault has been identified in the transmission fluid temperature sensor circuit.

Diagnostic Process

Before proceeding with the repair, it’s crucial to conduct a thorough diagnostic process to confirm the presence of the P0715 error code and identify its root cause. Here are the steps involved in diagnosing P0715:

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  1. Using an OBD-II scanner: Connect an OBD-II scanner to your vehicle’s onboard diagnostic port (usually located beneath the dashboard) and retrieve the error code. The scanner will provide specific information related to the P0715 error.
  2. Checking the transmission fluid level and condition: Inspect the transmission fluid level and check for any signs of contamination or degradation. Low fluid level or degraded fluid can affect the sensor’s readings and trigger the P0715 error.
  3. Inspecting the wiring and connectors: Examine the wiring harness and connectors associated with the transmission fluid temperature sensor. Look for any visible damage, loose connections, or corrosion that may be causing an intermittent circuit.
  4. Testing the transmission fluid temperature sensor: Using a multimeter, measure the resistance of the sensor at various temperatures according to the manufacturer’s specifications. Compare the readings with the specified values to determine if the sensor is functioning correctly.

Step-by-Step Guide to Correct P0715

Now that you’ve diagnosed the P0715 error code and confirmed the faulty transmission fluid temperature sensor circuit, follow these steps to correct the issue:

  1. Safety precautions and tools needed: Ensure the vehicle is parked on a flat surface and engage the parking brake. Additionally, gather the necessary tools for the repair, including a socket set, electrical contact cleaner, and a replacement transmission fluid temperature sensor.
  2. Park the vehicle on a flat surface and engage the parking brake: Before beginning any repair work, it’s essential to park the vehicle on a level surface and engage the parking brake for added safety.
  3. Locate the transmission fluid temperature sensor: Consult the vehicle’s service manual to locate the transmission fluid temperature sensor. Typically, it is positioned on the transmission housing or the valve body.
  4. Disconnect the electrical connector from the sensor: Carefully detach the electrical connector from the sensor. You may need to use a small flathead screwdriver to release the locking mechanism.
  5. Remove the sensor using the appropriate tools: Use the appropriate socket or wrench to remove the sensor from its mounting location. Take note of the sensor’s orientation for proper installation.
  6. Inspect the sensor for any signs of damage or corrosion: Thoroughly examine the old sensor for any visible signs of damage, corrosion, or fluid contamination. Replace the sensor if necessary.
  7. Clean the sensor and the connector using electrical contact cleaner: Spray electrical contact cleaner on the sensor and the electrical connector to remove any dirt, grime, or corrosion. Wipe them clean using a lint-free cloth.
  8. Install the new transmission fluid temperature sensor: Position the new sensor into the mounting location and tighten it according to the manufacturer’s torque specifications. Ensure it is aligned correctly with the mating surface.
  9. Reconnect the electrical connector: Attach the electrical connector to the new sensor, ensuring a secure connection. Listen for an audible click to verify proper engagement.
  10. Clear the error code using the OBD-II scanner: Use the OBD-II scanner to clear the error code from the vehicle’s system. This will reset the check engine light and confirm the successful repair.

Tips for a Successful Repair

To ensure a successful repair and prevent future issues, consider the following tips:

  • Purchase a high-quality replacement sensor from a reputable supplier to ensure accuracy and durability.
  • Double-check the electrical connections for proper fitment and secure attachment.
  • Follow the manufacturer’s torque specifications when installing the new sensor to avoid overtightening or undertightening.
  • After the repair, monitor the transmission fluid temperature regularly to ensure it stays within the recommended range.


Fixing the P0715 error code related to the transmission fluid temperature sensor circuit requires a systematic approach. By following the diagnostic process and the step-by-step guide provided in this article, you can address the issue effectively and prevent further damage to your vehicle’s transmission. Remember to exercise caution, use the appropriate tools, and consider the tips mentioned for a successful repair.


Can I continue driving with the P0715 error code?

  1. It is not recommended to continue driving with the P0715 error code as it can lead to transmission overheating and potential damage. It’s best to address the issue promptly to avoid further complications.

Is it possible to clean the transmission fluid temperature sensor instead of replacing it?

  1. While cleaning the sensor and its connector can sometimes resolve the issue, it’s advisable to replace the sensor if it shows signs of damage or corrosion. A new sensor ensures accurate readings and reliable performance.

Can I clear the error code without fixing the underlying issue?

  1. Clearing the error code will temporarily turn off the check engine light, but it won’t fix the underlying problem. It’s crucial to diagnose and repair the cause of the error code to prevent recurring issues and potential damage to the transmission.