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why does my Honda Accord 10th Generation (2018-2022) check engine light keep coming on - Honda Accord
Home/Cars/Honda/Accord/8th Generation (2008-2012)/why does my Honda Accord 10th Generation (2018-2022) check engine light keep coming on

why does my Honda Accord 10th Generation (2018-2022) check engine light keep coming on

Honda Accord 8th Generation (2008-2012)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
544 words

Problem Statement

Learn how to diagnose and fix the check engine light issue in Honda Accord 10th Generation (2018-2022). Step-by-step guide with symptoms and solutions.

Affected Component
Engine
Estimated Time
2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the battery before working on electrical components.
  • •Allow the engine to cool before inspecting or replacing engine components.

Symptoms

  • •Check engine light illuminated
  • •Decreased fuel efficiency
  • •Rough idle or engine misfire
  • •Unusual engine noises (knocking or pinging)
  • •Difficulty starting the engine
  • •Increased exhaust emissions

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

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 (including spark plug socket)
  • •Torque wrench
  • •Screwdriver set

Parts Required

  • •Replacement spark plugs
  • •Ignition coils (if faulty)
  • •Vacuum hoses (if damaged)
  • •Fuel cap (if defective)

Additional Information

Affected Component
Engine
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
4 items
Parts Required
4 items

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Solution
1. Preparation
  • Gather necessary tools and parts.
  • Ensure the vehicle is parked on a level surface and the engine is off.
  • Disconnect the negative battery terminal to prevent electrical shock.
2. Address Error Codes
  • Use the OBD-II scanner to retrieve and document error codes.
  • Research the codes to determine the specific systems affected.
3. Fuel Cap Inspection
  • Remove the fuel cap and inspect for cracks or wear.
  • Clean the sealing surface on the fuel filler neck.
  • Replace the fuel cap if damaged and ensure it clicks securely when reattached.
4. Spark Plug and Ignition Coil Replacement
  • Remove the engine cover (if applicable) using the appropriate socket.
  • Disconnect the ignition coil connectors and unscrew the coils using a socket wrench.
  • Remove the old spark plugs using a spark plug socket and inspect for wear.
  • Install new spark plugs (use specified torque value as per manufacturer, usually around 13-16 lb-ft).
  • Reinstall the ignition coils and reconnect the electrical connectors.
5. Vacuum Hose Inspection
  • Visually inspect all vacuum hoses connected to the intake manifold for cracks or disconnections.
  • Replace any damaged hoses with new ones.
  • Ensure all connections are secure.
6. Reconnect Battery
  • Reconnect the negative battery terminal.
  • Start the engine and let it idle for a few minutes to check for any abnormal sounds or warning lights.