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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
512 words

Problem Statement

Learn how to diagnose and fix the check engine light issue on your 2018-2022 Honda Accord. Step-by-step guide with diagnostic procedures and repair instructions.

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 performing any repairs related to the engine or exhaust system.

Symptoms

  • •Check engine light illuminated
  • •Engine misfires or rough idle
  • •Decreased fuel efficiency
  • •Unusual engine noises (knocking or pinging)
  • •Poor acceleration or performance
  • •Emission-related issues (increased exhaust smoke)

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
  • •Torque wrench
  • •Screwdrivers
  • •Pliers

Parts Required

  • •Spark plugs
  • •Ignition coils (if faulty)
  • •Air filter
  • •Gas cap (if faulty)

Additional Information

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

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Solution
1. Preparation
  • Gather necessary tools and parts.
  • Disconnect the negative battery terminal to prevent electrical shorts.
  • Ensure the vehicle is on a flat surface and securely lifted if necessary.
2. Addressing Faulty Components

2.1. Replace Spark Plugs

  • Remove the ignition coil cover.
  • Disconnect the ignition coils and remove them.
  • Use a spark plug socket to remove the old spark plugs.
  • Install new spark plugs, ensuring they are gapped correctly (typically 0.044 inches for Honda).
  • Reinstall the ignition coils and cover.

2.2. Repair or Replace the Gas Cap

  • Inspect the gas cap for cracks or wear.
  • If damaged, replace with a new gas cap that meets OEM specifications.
  • Ensure the gas cap is tightened properly after refueling.

2.3. Replace Air Filter

  • Open the air filter housing.
  • Remove the old air filter, ensuring no debris falls into the intake.
  • Install a new air filter, ensuring it is seated properly in the housing.
3. Clear Error Codes
  • Reconnect the negative battery terminal.
  • Use the OBD-II scanner to clear any stored error codes.
  • Start the engine and monitor for the check engine light.