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

high

Severity

3 min read

529 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 a faulty speed sensor in Ford Explorer Sixth Generation (2020-present). Step-by-step guide with symptoms and solutions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to avoid shorts.
•Allow the vehicle to cool before starting work on the transmission area.

Symptoms

•Speedometer reading is erratic or non-functional
•Transmission shifts roughly or improperly
•Cruise control malfunctioning or disengaging unexpectedly
•Check engine light illuminated
•ABS warning light illuminated

Diagnostic Steps

1
Scan the vehicle’s OBD-II system for error codes related to the speed sensor.
2
Inspect the wiring and connectors leading to the speed sensor for damage or corrosion.
3
Measure the voltage and resistance of the speed sensor using a multimeter.
4
Check the speed sensor’s signal output while the vehicle is in motion.
5
Inspect the vehicle’s wheel speed sensors if applicable, as they can affect speed 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
•Multimeter
•Socket set
•Torque wrench
•Wire brush
•Cleaning solvent
•Safety glasses
•Gloves

Parts Required

•New speed sensor

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Diagnostic Steps

1
Scan the vehicle’s OBD-II system for error codes related to the speed sensor.
2
Inspect the wiring and connectors leading to the speed sensor for damage or corrosion.
3
Measure the voltage and resistance of the speed sensor using a multimeter.
4
Check the speed sensor’s signal output while the vehicle is in motion.
5
Inspect the vehicle’s wheel speed sensors if applicable, as they can affect speed readings.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, wire brush, cleaning solvent, safety glasses, gloves.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to prevent any electrical shorts.

2. Remove Speed Sensor

Locate the speed sensor, typically found on the transmission or differential.
Using the socket set, remove the bolt securing the speed sensor.
Carefully pull the speed sensor out from its mount, being cautious not to damage surrounding components.

3. Inspect and Clean

Inspect the speed sensor for physical damage or wear.
Clean the sensor’s mounting area and connector using a wire brush and cleaning solvent to ensure a good connection.

4. Install New Speed Sensor

If the sensor is faulty, install the new speed sensor by reversing the removal steps.
Ensure that the sensor is seated correctly and secure it with the appropriate torque (usually around 8-10 ft-lbs, check manufacturer specifications).
Reconnect the electrical connector until it clicks into place.

5. Reconnect Battery and Test

Reconnect the battery terminals and ensure they are tight.
Start the engine and allow it to idle for a few minutes.
Test drive the vehicle to verify that the speedometer operates correctly and that transmission shifts are smooth.