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Home/Cars/Toyota/Corolla/E170 (2013-2019)/how to fix the P0720 code on my Toyota Corolla E170 (2013-2019)?

how to fix the P0720 code on my Toyota Corolla E170 (2013-2019)?

Toyota Corolla E170 (2013-2019)

Error Codes
Severity: highDifficulty: mediumError Code: P07201-2 hours
3 min read
483 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix P0720 output speed sensor issues in Toyota Corolla E170. Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
P0720
Affected Component
Transmission
Estimated Time
1-2 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical systems.
  • ⚠Allow the engine to cool before working on the transmission.

Symptoms

  • •Check engine light illuminated
  • •Transmission slipping or harsh shifting
  • •Speedometer not functioning properly
  • •Poor acceleration or loss of power
  • •Increased fuel consumption

Diagnostic Steps

  1. 1Scan the vehicle's OBD-II system to confirm the P0720 code and check for any additional codes.
  2. 2Inspect the wiring and connectors leading to the output speed sensor for damage or corrosion.
  3. 3Measure the resistance of the output speed sensor using a multimeter to ensure it is within the manufacturer's specifications.
  4. 4Check the continuity of the wiring from the sensor to the engine control unit (ECU).
  5. 5Test the output speed sensor signal with a scan tool to verify its operation.
  6. 6Inspect the transmission fluid level and condition; low or contaminated fluid can affect sensor performance.

Solution

Solution

1. Preparation

  • Gather tools and parts required for the repair.
  • Disconnect the battery to ensure safety while working on electrical components.

2. Remove the Output Speed Sensor

  • Locate the output speed sensor on the transmission (typically near the output shaft).
  • Disconnect the electrical connector from the sensor.
  • Remove the mounting bolt(s) securing the sensor using a socket set.
  • Gently pull the sensor out from its housing.

3. Inspect and Replace

  • Inspect the old sensor for any signs of damage or wear.
  • If the sensor is faulty, replace it with a new one.
  • Ensure the new sensor is clean and free of debris before installation.

4. Reinstall the Output Speed Sensor

  • Insert the new sensor into its housing, ensuring it seats properly.
  • Secure the sensor with the mounting bolt(s) and tighten to the manufacturer’s torque specifications (typically around 8-10 ft-lbs).
  • Reconnect the electrical connector to the sensor.

5. Reconnect the Battery and Test

  • Reconnect the battery terminals.
  • Start the vehicle and allow it to reach operating temperature.
  • Clear the P0720 code from the OBD-II system using a scan tool.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •OBD-II scanner
  • •Multimeter
  • •Socket set
  • •Torque wrench

Parts Required

  • •Output speed sensor

Additional Information

Error Code
P0720
Affected Component
Transmission
Estimated Time
1-2 hours
Difficulty
medium
Severity
high
Tools Required
4 items
Parts Required
1 item

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