how to resolve a faulty speed sensor in my Ford Explorer Sixth Generation (2020-present)

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

464 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 speed sensor issues in Ford Explorer (2020-present). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Transmission

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

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

Symptoms

•Check engine light illuminated
•Erratic speedometer readings
•Transmission shifting issues
•Poor fuel economy
•ABS warning light on the dashboard

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related fault codes.
2
Inspect the speed sensor wiring and connectors for any signs of damage or corrosion.
3
Check the voltage and ground at the speed sensor using a multimeter.
4
Test the resistance of the speed sensor to ensure it is within the manufacturer’s specifications.
5
Verify the vehicle's speed with a GPS device to confirm discrepancies in speedometer readings.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

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
•Screwdrivers (if needed for cover removal)

Parts Required

•New speed sensor
•Thread sealant (if applicable)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related fault codes.
2
Inspect the speed sensor wiring and connectors for any signs of damage or corrosion.
3
Check the voltage and ground at the speed sensor using a multimeter.
4
Test the resistance of the speed sensor to ensure it is within the manufacturer’s specifications.
5
Verify the vehicle's speed with a GPS device to confirm discrepancies in speedometer readings.

Solution

1. Preparation

Gather tools and parts required for the repair.
Disconnect the vehicle's negative battery terminal to prevent electrical shorts.
Ensure the vehicle is parked on a level surface and set the parking brake.

2. Access the Speed Sensor

Locate the speed sensor on the transmission; it is typically located on the side or top of the transmission case.
Remove any covering or components obstructing access to the sensor.

3. Remove the Faulty Speed Sensor

Disconnect the electrical connector from the speed sensor.
Use a socket wrench to remove the sensor from its mounting location. Be cautious of any fluid that may escape.

4. Install the New Speed Sensor

Apply a small amount of thread sealant to the threads of the new speed sensor if recommended by the manufacturer.
Install the new speed sensor into the transmission and tighten it to the manufacturer's specified torque (typically around 8-10 ft-lbs).
Reconnect the electrical connector securely to the new speed sensor.

5. Reassemble and Reconnect

Replace any components or covers that were removed to access the speed sensor.
Reconnect the negative battery terminal.