how to fix Honda Accord 9th Generation (2013-2017) module communication error

Honda Accord 10th Generation (2018-2022)

Error Codes

1-3 hours

Time

medium

Difficulty

high

Severity

3 min read

513 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 Honda Accord 9th Generation (2013-2017). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on electrical systems to avoid short circuits.
•Allow the engine to cool before working on any components to prevent burns.

Symptoms

•Check engine light illuminated
•Various warning lights on the dashboard
•Inoperative or erratic functioning of electronic features
•Difficulty in starting the vehicle
•Error messages displayed on the instrument cluster
•Communication errors when scanning with an OBD-II scanner

Diagnostic Steps

1
Use an OBD-II scanner to check for any stored error codes and document them.
2
Inspect the vehicle's battery voltage to ensure it is within the normal range (12.4-12.7 volts).
3
Check for corrosion or loose connections at the battery terminals and ground connections.
4
Inspect and test the vehicle’s fuses related to the communication modules.
5
Examine wiring and connectors for any visible damage or fraying, particularly those connected to key modules.
6
Update the vehicle’s software/firmware if applicable.

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
•Digital multimeter
•Wire brush
•Fuse puller
•Electrical contact cleaner
•Basic hand tools

Parts Required

•Fuses

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Use an OBD-II scanner to check for any stored error codes and document them.
2
Inspect the vehicle's battery voltage to ensure it is within the normal range (12.4-12.7 volts).
3
Check for corrosion or loose connections at the battery terminals and ground connections.
4
Inspect and test the vehicle’s fuses related to the communication modules.
5
Examine wiring and connectors for any visible damage or fraying, particularly those connected to key modules.
6
Update the vehicle’s software/firmware if applicable.

Solution

1. Preparation

Gather tools and materials needed for the repair.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Clean Battery Connections

Sub-steps:
1. Remove the battery terminal clamps (negative first, then positive).
2. Clean the terminals and battery posts using a wire brush and a mixture of baking soda and water to remove corrosion.
3. Reattach the battery terminals securely (positive first, then negative).

3. Check and Replace Fuses

Sub-steps:
1. Locate the fuse box (usually found under the dashboard or hood).
2. Use the fuse box diagram to identify fuses related to the communication modules.
3. Remove any blown fuses using a fuse puller and replace them with new ones of the same amperage.

4. Inspect Wiring and Connectors

Sub-steps:
1. Visually inspect the wiring harnesses connected to the ECM, BCM, and other relevant modules for damage.
2. If any damaged wires are found, repair or replace them as necessary.
3. Ensure all connectors are seated properly and are free of corrosion. Clean with electrical contact cleaner if needed.

5. Software Update (if applicable)

Sub-steps:
1. Connect the vehicle to a compatible Honda diagnostic scanner.
2. Follow the prompts to check for software updates for the modules.
3. If updates are available, proceed with updating the software according to the manufacturer's instructions.

6. Reconnect Battery and Test

Sub-steps:
1. Reconnect the negative battery terminal securely.
2. Start the vehicle and check if the communication error persists.
3. Scan for error codes again to ensure all systems are operational.

Tools Required:

OBD-II scanner
Digital multimeter
Wire brush
Fuse puller
Electrical contact cleaner
Basic hand tools (sockets, wrenches)

Parts Required:

Fuses (specific to the blown ones)
Wiring harnesses (if any are damaged)

Estimated Repair Time: 1-3 hours

Safety Warnings:

Always disconnect the battery before working on electrical systems to avoid short circuits.
Allow the engine to cool before working on any components to prevent burns.