how to fix P0302 misfire code in Honda Accord 10th Generation (2018-2022)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to prevent electrical shorts.
• Allow the engine to cool completely.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the engine cover if applicable.
• Locate and remove the spark plug for cylinder 2 using the spark plug socket.
• Inspect the spark plug for signs of wear, carbon buildup, or damage.
• Replace the spark plug with a new one if necessary, ensuring it meets OEM specifications (typically around 13-15 ft-lbs torque).

3. Check and Replace Ignition Coil

• Tools Required: Socket set, torque wrench.
• Remove the ignition coil from cylinder 2 by unscrewing the mounting bolts.
• Inspect the coil for cracks or corrosion.
• If necessary, replace with a new ignition coil, ensuring proper torque (usually around 8-10 ft-lbs).

4. Inspect and Clean Fuel Injector

• Tools Required: Fuel injector cleaner, basic hand tools.
• Access the fuel injector for cylinder 2, usually located on the intake manifold.
• Disconnect the fuel line carefully, taking precautions against fuel spillage.
• Remove the injector and inspect it for clogs or debris.
• Clean the injector using a fuel injector cleaner or replace it if cleaning does not solve the issue.

5. Conduct Compression Test

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 2 and insert the compression tester.
• Crank the engine and read the compression value.
• Compare the reading with the manufacturer’s specifications; if low, further engine investigation is required.