how to fix the P0720 code in my Toyota Corolla E140 (2006-2013)

Learn how to diagnose and fix P0720 vehicle speed sensor issues in Toyota Corolla E140 (2006-2013). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety.
• Allow the vehicle to cool if it has been running.

2. Remove the Vehicle Speed Sensor

• Locate the vehicle speed sensor on the transmission (usually near the output shaft).
• Disconnect the electrical connector from the sensor.
• Remove the retaining bolts using a socket set (typically 10mm).
• Carefully pull the sensor out of the transmission housing.

3. Inspect and Clean

• Inspect the old vehicle speed sensor for signs of wear or damage.
• Clean the mounting area on the transmission to remove dirt and debris.
• Use a clean cloth to wipe the sensor connector and ensure it is free of corrosion.

4. Install New Vehicle Speed Sensor

• Apply a small amount of transmission fluid to the O-ring of the new speed sensor to ensure a proper seal.
• Insert the new sensor into the transmission housing and secure it with the retaining bolts (torque to manufacturer's specifications, typically around 7-9 ft-lbs).
• Reconnect the electrical connector firmly.

5. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the vehicle and allow it to reach operating temperature.
• Test drive the vehicle to verify that the speedometer works correctly and that there are no transmission issues.