how to fix the P0302 code on my Honda Accord 10th Generation (2018-2022)?

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 to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, dielectric grease.
• Remove the engine cover if necessary.
• Use the socket set to remove the spark plug from cylinder 2.
• Inspect the spark plug for wear, carbon buildup, or damage. Replace if necessary.
• Apply a small amount of dielectric grease to the spark plug threads and reinstall it, tightening to the manufacturer’s torque specifications (typically 13-16 lb-ft).

3. Check and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil.
• Remove the ignition coil bolt using a socket.
• Carefully pull the ignition coil out of the cylinder head.
• Inspect for cracks or carbon tracking. If damaged, replace the ignition coil with a new one.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Test and Replace Fuel Injector

• Tools Required: Fuel pressure gauge, fuel injector cleaning kit (if cleaning is needed).
• Remove the fuel rail to access the fuel injector for cylinder 2.
• Perform a fuel injector balance test or use a multimeter to check injector resistance. Replace the fuel injector if it’s faulty.
• If cleaning, use the fuel injector cleaning kit to clear any obstructions.
• Reinstall the fuel rail and ensure all connections are secure.

5. Check Compression

• Tools Required: Compression tester.
• Remove the spark plug and ignition coil for cylinder 2.
• Insert the compression tester into the spark plug hole.
• Crank the engine and record the compression reading. Compare with the specifications (usually between 180-200 PSI).
• If compression is low, further investigation may be needed to check for valve or head gasket issues.