how to fix P0302 code in Honda Accord 10th Generation (2018-2022)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the engine is cool.
• Disconnect the battery to prevent any electrical shorts.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the engine cover if necessary.
• Disconnect the ignition coil connector for cylinder 2.
• Remove the ignition coil using the socket set.
• Unscrew and remove the spark plug using the spark plug socket.
• Install a new spark plug, ensuring it is gapped according to manufacturer specifications (usually around 0.043 inches).
• Torque the spark plug to the manufacturer's specifications (typically around 13 lb-ft).
• Reinstall the ignition coil and reconnect the connector.

3. Replace Ignition Coil (if faulty)

• Tools Required: Socket set.
• Remove the ignition coil for cylinder 2 as outlined above.
• Install the new ignition coil ensuring it clicks into place.
• Reconnect the ignition coil connector.

4. Clean or Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector cleaning kit or replacement injector.
• Disconnect the fuel line and electrical connector from the fuel injector for cylinder 2.
• Remove the fuel injector using the appropriate socket.
• If cleaning, follow the cleaning kit instructions. If replacing, install the new injector ensuring proper alignment.
• Reconnect the fuel line and electrical connector securely.

5. Conduct a Compression Test (if needed)

• Tools Required: Compression gauge.
• Remove the spark plug from cylinder 2.
• Insert the compression gauge and crank the engine several times.
• Record the compression reading and compare it to manufacturer specifications (typically around 180 psi).
• If the compression is low, further investigation is needed into potential mechanical issues.