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

Solution

1. Preparation

• Gather tools: OBD-II scanner, torque wrench, socket set, multimeter, compression tester.
• Disconnect the battery to prevent any electrical shorts while working.

2. Replace Spark Plug

• Remove the engine cover if applicable.
• Disconnect the ignition coil connector for cylinder 2.
• Remove the ignition coil by unscrewing it from the cylinder head.
• Use a socket wrench to remove the spark plug. Inspect the old spark plug for wear.
• Install a new spark plug, ensuring it is properly gapped according to manufacturer specifications (typically around 0.044 inches).
• Reinstall the ignition coil and reconnect its connector. Torque the coil to manufacturer specifications.

3. Inspect and Replace Fuel Injector (if necessary)

• Locate the fuel rail and remove any necessary covers.
• Disconnect the fuel injector connector for cylinder 2.
• Remove the fuel rail bolts and carefully lift the fuel rail to access the injector.
• Pull out the old fuel injector from the rail and replace it with a new one.
• Reassemble the fuel rail, ensuring all connections are secure.

4. Perform Compression Test

• Remove the spark plug from cylinder 2.
• Insert the compression tester into the spark plug hole.
• Crank the engine and read the compression value. Compare it with the manufacturer’s specifications.
• If compression is low, further diagnosis is required, possibly indicating internal engine issues.