how to fix P0302 code in Ford F-150 Fourteenth Generation (2021-present)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the battery to ensure safety while working on electrical components.

2. Replace Spark Plug and Ignition Coil

• Tools Required: Socket set, torque wrench, dielectric grease
• Remove the engine cover if applicable.
• Disconnect the electrical connector from the ignition coil for cylinder 2.
• Remove the ignition coil by unscrewing the retaining bolt.
• Pull out the spark plug using a spark plug socket.
• Inspect the old spark plug for wear; replace it with a new one, ensuring it is gapped correctly.
• Apply a small amount of dielectric grease to the inside of the ignition coil boot.
• Reinstall the ignition coil and secure it with the retaining bolt.

3. Inspect and Clean Fuel Injector

• Tools Required: Fuel injector cleaner, safety glasses
• Disconnect the electrical connector from the fuel injector for cylinder 2.
• Remove the fuel injector using a socket set, taking care not to damage the O-ring.
• Clean the fuel injector with a proper cleaning solution and inspect for clogs.
• Reinstall the fuel injector, ensuring the O-ring is seated correctly.

4. Perform Compression Test

• Tools Required: Compression tester
• Remove the spark plug for cylinder 2.
• Insert the compression tester into the spark plug hole.
• Crank the engine to take the compression reading; compare it with manufacturer specifications.
• If the compression is low, further diagnosis may be necessary (e.g., valve issues).

5. Reassemble and Test

• Reconnect the battery.
• Start the engine to check for smooth operation.
• Monitor for any check engine light illumination.