why does my Honda Civic 10th Generation (2016-2021) check engine light come on and off

Honda Civic 10th Generation (2016-2021)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

494 words

Problem Statement

Learn how to diagnose and fix the intermittent check engine light issue in Honda Civic 10th Generation (2016-2021). Step-by-step guide with solutions.

Affected Component

Engine

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on any electrical systems.
•Allow the vehicle to cool down before inspecting the engine or exhaust components.

Symptoms

•Check engine light illuminated intermittently
•Vehicle may experience occasional rough idle
•Decreased fuel efficiency
•Engine stalling during acceleration
•Unusual noises from the engine compartment

Diagnostic Steps

1
Scan the vehicle's OBD-II system using a scanner to retrieve any stored error codes.
2
Inspect the gas cap for proper sealing; a loose or damaged cap can trigger the check engine light.
3
Check engine oil and coolant levels to rule out low fluid issues.
4
Perform a visual inspection of the air intake system for any leaks or cracks.
5
Examine the exhaust system for any signs of damage or leaks.
6
Test the battery and charging system to ensure proper voltage levels are maintained.
7
Monitor fuel pressure to check for any irregularities.

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
•Torque wrench
•Screwdrivers
•Fuel pressure gauge

Parts Required

•Air filter
•Spark plugs
•Fuel system cleaner

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan the vehicle's OBD-II system using a scanner to retrieve any stored error codes.
2
Inspect the gas cap for proper sealing; a loose or damaged cap can trigger the check engine light.
3
Check engine oil and coolant levels to rule out low fluid issues.
4
Perform a visual inspection of the air intake system for any leaks or cracks.
5
Examine the exhaust system for any signs of damage or leaks.
6
Test the battery and charging system to ensure proper voltage levels are maintained.
7
Monitor fuel pressure to check for any irregularities.

Solution

1. Preparation

Gather tools and parts required for the repair.
Disconnect the negative battery terminal to prevent electrical shorts during repairs.

2. Address Fault Codes

Use the OBD-II scanner to clear any stored error codes after identifying them.
If the same codes reappear, further investigation into specific components may be necessary.

3. Inspect and Replace Components

Air Filter Replacement:
- Remove the air filter cover using a socket set.
- Replace the old air filter with a new one, ensuring a secure fit.
Spark Plug Inspection:
- Remove the ignition coil cover (if applicable) using a socket set.
- Inspect and replace spark plugs if worn or fouled, following torque specifications (typically around 13 lb-ft).
Fuel System Cleaning:
- Add a fuel system cleaner to the gas tank as per manufacturer's instructions.
- Consider a professional fuel injection cleaning if issues persist.

4. Reassemble and Test

Reconnect the negative battery terminal securely.
Start the vehicle and allow it to reach operating temperature while monitoring the check engine light.