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

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, compression tester, fuel injector cleaner, multimeter.
• Disconnect the negative battery terminal before starting work to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2 by unscrewing the retaining bolts.
• Disconnect the electrical connector from the ignition coil.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear, carbon buildup, or damage; replace it if necessary (use OEM specifications).
• Reinstall the spark plug and ignition coil, ensuring they are tightened to the manufacturer’s torque specifications (typically around 13 lb-ft).

3. Test and Replace Ignition Coil

• Use a multimeter to test the resistance of the ignition coil. If the readings are outside the specified range, replace the ignition coil for cylinder 2.
• If replacing, ensure the new coil is seated properly and reconnect the electrical connector.

4. Inspect and Clean Fuel Injector

• Remove the fuel injector from cylinder 2 after disconnecting the fuel rail and any electrical connectors.
• Clean the fuel injector using a fuel injector cleaner or replace it if it’s clogged or damaged.
• Reinstall the fuel injector and reconnect it along with the fuel rail.

5. Conduct Compression Test

• Use a compression tester to check the compression of cylinder 2. Ensure it meets the specified value (typically around 180 psi).
• If the compression is low, further diagnostics may be required for internal engine issues (head gasket, valves, etc.).