how to fix P0302 code on my Honda Accord 9th Generation (2013-2017)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal.

2. Replace Spark Plug

• Tools Needed: Socket wrench, spark plug socket, torque wrench.
• Remove the ignition coil cover (if applicable).
• Disconnect the ignition coil connector for cylinder 2.
• Remove the ignition coil by unscrewing it and pulling it out gently.
• Use a spark plug socket to remove the spark plug from cylinder 2.
• Install the new spark plug, hand-tighten, and then torque to the manufacturer’s specification (typically around 13-16 lb-ft).
• Reinstall the ignition coil and reconnect the connector.

3. Replace Ignition Coil (if necessary)

• Tools Needed: Socket wrench, torque wrench.
• If the ignition coil was found to be faulty during inspection, use the same steps as above to remove and replace the ignition coil for cylinder 2.
• Ensure the new coil is properly seated and connected.

4. Inspect and Replace Fuel Injector (if necessary)

• Tools Needed: Fuel injector puller, socket set.
• Remove any components obstructing access to the fuel injector for cylinder 2.
• Disconnect the fuel injector electrical connector and fuel line (use a rag to catch any spills).
• Remove the fuel injector using a fuel injector puller.
• Install the new fuel injector, ensuring it is seated properly and reconnect the fuel line and electrical connector.

5. Check for Vacuum Leaks

• Tools Needed: Smoke machine or carburetor cleaner.
• Inspect all vacuum hoses connected to the intake manifold for any cracks or disconnections.
• Use a smoke machine or spray carburetor cleaner around the intake manifold while the engine is running to detect leaks.
• Repair any leaks found.

6. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0302 code and any other stored codes.