how to fix P0302 code on Honda Accord 8th Generation (2008-2012)

Solution

1. Preparation

• Gather necessary tools and parts.
• Park the vehicle on a flat surface and disconnect the battery to prevent electrical shorts.
• Allow the engine to cool before starting work.

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench
• Remove the ignition coil from cylinder 2 by unscrewing the bolts and disconnecting the electrical connector.
• Remove the spark plug with a spark plug socket.
• Inspect the spark plug for wear (gap, color, and condition). If worn, replace it with a new one.
• Torque the new spark plug to the manufacturer's specification (usually around 13 lb-ft).
• Reinstall the ignition coil.

3. Test and Replace Ignition Coil (if necessary)

• Tools Required: Multimeter
• Use a multimeter to test the primary and secondary resistance of the ignition coil according to specifications.
• If the ignition coil is faulty, replace it with a new one and reconnect it.

4. Check and Clean/Replace Fuel Injector

• Tools Required: Fuel injector cleaning kit or replacement injector
• Disconnect the fuel injector connector and remove the injector from the rail.
• Inspect for clogs and clean it using a fuel injector cleaning kit. If cleaning does not resolve the issue, replace the injector.
• Reinstall the injector and reconnect the connector.

5. Perform Compression Test

• Tools Required: Compression tester
• Remove the spark plug from cylinder 2 and insert the compression tester.
• Crank the engine to get a compression reading. Compare it to the manufacturer’s specifications.
• If readings are low, further inspection of engine internals may be necessary (e.g., valve seals, piston rings).