how to fix the module communication error in Ford Explorer Fifth Generation (2011-2019)

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

490 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 module communication errors in Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent short circuits.

Symptoms

•Check engine light illuminated
•Inoperative dashboard gauges
•Malfunctioning infotainment system
•Failure of power windows or locks
•Error messages on the instrument cluster
•Difficulty starting the engine

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific module communication errors.
2
Inspect the vehicle’s wiring harness and connectors for visible damage, corrosion, or loose connections.
3
Verify battery voltage and ground connections to the affected modules using a multimeter.
4
Check for updates or recalls related to the vehicle’s software and modules.
5
Test individual modules for functionality by disconnecting and reconnecting each module one at a time.
6
Review vehicle repair history for prior work that may have affected electronic systems.

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
•Wire strippers
•Crimping tool
•Electrical cleaner
•Compressed air

Parts Required

•Wiring harness (if damaged)
•Connectors (if corroded or damaged)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific module communication errors.
2
Inspect the vehicle’s wiring harness and connectors for visible damage, corrosion, or loose connections.
3
Verify battery voltage and ground connections to the affected modules using a multimeter.
4
Check for updates or recalls related to the vehicle’s software and modules.
5
Test individual modules for functionality by disconnecting and reconnecting each module one at a time.
6
Review vehicle repair history for prior work that may have affected electronic systems.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Inspect and Repair Wiring

Tools Required: Wire strippers, crimping tool, electrical tape, multimeter
Inspect the wiring harness connected to the modules for any damage.
- Use the multimeter to check for continuity in the wires.
- Repair any frayed or damaged wires by splicing in new wire and securing with electrical tape.

3. Check and Clean Connectors

Tools Required: Electrical cleaner, compressed air
Remove the affected modules' connectors.
- Clean connectors with electrical cleaner and compressed air to remove corrosion and debris.
- Ensure connectors are firmly seated and free of damage.

4. Update Software

Tools Required: OBD-II scanner with software update capability
Connect the OBD-II scanner to the vehicle's diagnostic port.
- Check for any available software updates for the vehicle’s modules.
- Follow the scanner instructions to update the software if necessary.

5. Reconnect and Test

Reattach all connectors and wiring harnesses.
Reconnect the negative battery terminal.
Start the vehicle and check for error codes again.