how to fix P0302 code on my Ford F-150 13th Generation (2015-2020)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on the vehicle.
• Allow the engine to cool before proceeding with repairs.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, dielectric grease
• Remove the engine cover if applicable.
• Disconnect the ignition coil connector for cylinder 2.
• Unscrew the ignition coil from the cylinder head and remove it.
• Remove the spark plug using a spark plug socket.
• Inspect the old spark plug for wear; replace it with a new spark plug, ensuring it’s gapped correctly.
• Apply dielectric grease to the ignition coil boot before reinstallation.

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set
• If the spark plug is fine, proceed to inspect the ignition coil.
• Test the ignition coil with a multimeter: measure the resistance of the primary and secondary windings.
• If out of specification, replace the ignition coil with a new one.
• Reinstall the ignition coil and reconnect the connector.

4. Check and Replace Fuel Injector

• Tools Required: Fuel injector puller, socket set, torque wrench
• If misfire persists, check the fuel injector for cylinder 2.
• Disconnect the fuel injector connector.
• Remove the fuel rail if necessary to access the injector.
• Replace the fuel injector with a new one, ensuring proper sealing and connection.
• Reassemble the fuel rail and reconnect any lines or connectors.

5. Reassemble and Test

• Reinstall any components removed for access.
• Reconnect the battery.
• Clear the error codes using the OBD-II scanner.
• Start the engine and ensure it runs smoothly without misfires.