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

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

478 words

Problem Statement

Learn how to diagnose and fix a faulty speed sensor in Ford Explorer Sixth Generation. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to avoid shocks or shorts.

Symptoms

•Speedometer displays incorrect speed
•Check engine light illuminated
•Transmission shifting issues
•Cruise control malfunction
•ABS warning light activated

Diagnostic Steps

1
Scan the vehicle using an OBD-II scanner to check for any error codes related to the speed sensor.
2
Inspect the speed sensor wiring and connectors for any signs of damage or corrosion.
3
Measure the resistance of the speed sensor using a multimeter to ensure it is within specifications.
4
Check the vehicle's speed signal using a scan tool to verify if it is transmitting correctly.
5
Inspect the vehicle's wheel speed sensors if applicable, as they may affect overall speed readings and performance.

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

Parts Required

•New speed sensor

Related Faults

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Diagnostic Steps

1
Scan the vehicle using an OBD-II scanner to check for any error codes related to the speed sensor.
2
Inspect the speed sensor wiring and connectors for any signs of damage or corrosion.
3
Measure the resistance of the speed sensor using a multimeter to ensure it is within specifications.
4
Check the vehicle's speed signal using a scan tool to verify if it is transmitting correctly.
5
Inspect the vehicle's wheel speed sensors if applicable, as they may affect overall speed readings and performance.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to prevent any electrical issues.

2. Remove the Faulty Speed Sensor

Locate the speed sensor on the transmission; refer to the service manual for exact placement.
Disconnect the electrical connector from the speed sensor.
Remove the retaining bolt(s) using a socket set.
Carefully pull the speed sensor out of its mounting location.

3. Install the New Speed Sensor

Apply a small amount of thread sealant to the threads of the new speed sensor if required.
Insert the new speed sensor into its mounting location and secure it with the retaining bolt(s). Torque the bolt(s) to the manufacturer's specifications (typically around 8-10 lb-ft, but verify with the service manual).
Reconnect the electrical connector to the new speed sensor.

4. Reconnect Battery and Test

Reconnect the vehicle's battery.
Start the engine and allow it to idle for a few minutes.
Test the speedometer operation by gently driving the vehicle to check for accurate speed readings.