how to fix P0302 code on Honda Accord Eleventh Generation (2023-present)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Spark Plug

1. Remove the engine cover if applicable.
2. Locate the spark plug for cylinder 2 (refer to the owner's manual for the exact location).
3. Use a spark plug socket and ratchet to remove the spark plug.
4. Inspect the spark plug for wear or damage. Replace if necessary.
5. Install a new spark plug using the manufacturer’s specified gap (typically around 0.043 inches for Honda).
6. Torque the spark plug to the manufacturer's specifications (usually around 13 lb-ft).

3. Inspect and Replace Ignition Coil

1. Disconnect the electrical connector from the ignition coil on cylinder 2.
2. Remove the ignition coil using a socket or ratchet.
3. Inspect the ignition coil for any signs of damage or wear. Replace if necessary.
4. Install a new ignition coil and reconnect the electrical connector.

4. Test Fuel Injector

1. Disconnect the fuel injector connector for cylinder 2.
2. Use a noid light to check for proper electrical signal; if no signal, inspect wiring.
3. If the signal is present, remove the fuel injector and inspect for clogs.
4. Clean or replace the fuel injector if it’s clogged or damaged.

5. Perform Compression Test (if necessary)

1. Remove the spark plug from cylinder 2.
2. Insert a compression gauge into the spark plug hole.
3. Crank the engine a few times to get a compression reading.
4. Compare the reading with manufacturer specifications (should be around 190-210 psi); if low, further investigation is needed.