how to fix the P0302 code on my Ford F-150 12th Generation (2009-2014)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery by removing the negative terminal.
• Ensure the engine is cool before starting the repair.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2 using a socket set.
• Take out the spark plug using a spark plug socket and inspect for wear or damage.
• If damaged, replace it with a new spark plug (specify gap as per manufacturer’s specifications).
• Reinstall the ignition coil securely.

3. Inspect and Replace Ignition Coil (if necessary)

• If the spark plug is fine, test the ignition coil with a multimeter to ensure it’s functioning correctly.
• If faulty, remove the coil and replace it with a new ignition coil designed for the Ford F-150.
• Reconnect the ignition coil to the spark plug and ensure all connections are tight.

4. Test Fuel Injector

• Disconnect the electrical connector from the fuel injector on cylinder 2.
• Use a noid light to check for injector pulse while cranking the engine.
• If there’s no pulse, consider replacing the fuel injector.
• Reinstall the connector and ensure it’s secure.

5. Compression Test (if misfire persists)

• Remove the spark plug from cylinder 2 and insert a compression gauge.
• Crank the engine and record the compression reading.
• Compare the reading with specifications; if low, further engine diagnosis is needed.