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Home/Cars/Genesis/G70/IG (2017-2023)/how to fix the P0720 code in my Genesis G70 IG (2017-2023)

how to fix the P0720 code in my Genesis G70 IG (2017-2023)

Genesis G70 IG (2017-2023)

Error Codes
Severity: highDifficulty: mediumError Code: P07201-2 hours
3 min read
446 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 vehicle speed sensor issues in Genesis G70 (2017-2023). 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 area.

Symptoms

  • •Check engine light illuminated
  • •Erratic speedometer readings
  • •Transmission shifting issues
  • •Engine stalling or rough idling during gear changes
  • •Poor fuel economy

Diagnostic Steps

  1. 1Scan for error codes using an OBD-II scanner to confirm P0720 and check for any related codes.
  2. 2Inspect the vehicle speed sensor wiring and connectors for damage, corrosion, or loose connections.
  3. 3Test the vehicle speed sensor output with a multimeter to ensure it is functioning properly.
  4. 4Check the vehicle’s speedometer operation to confirm if it is receiving correct signals from the VSS.
  5. 5Inspect the transmission fluid level and condition, as low or dirty fluid can affect sensor performance.

Solution

Solution

1. Preparation

  • Gather all necessary tools and parts.
  • Disconnect the negative battery terminal to ensure safety.

2. Remove Vehicle Speed Sensor

  • Locate the vehicle speed sensor, typically found on the transmission.
  • Use a socket set to remove the mounting bolts securing the sensor.
  • Carefully disconnect the electrical connector from the sensor.

3. Inspect and Replace Sensor

  • Visually inspect the old sensor for damage or wear.
  • If the sensor is faulty, replace it with a new one.
  • Ensure the replacement sensor matches the OEM specifications.

4. Reinstall Sensor

  • Position the new vehicle speed sensor in place.
  • Reattach the electrical connector securely.
  • Reinstall the mounting bolts and torque them to the manufacturer’s specifications (typically around 7-10 ft-lbs).

5. Reconnect Battery and Test

  • Reconnect the negative battery terminal.
  • Start the engine and allow it to idle.
  • Clear the trouble codes using the OBD-II scanner and test drive the vehicle to see if the issue is resolved.

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
  • •Socket set
  • •Multimeter
  • •Torque wrench

Parts Required

  • •Replacement vehicle 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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