how to fix P0302 code on Ford F-150 14th Generation (2021-2024)

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to ensure safety during repairs.
• Tools Required: OBD-II scanner, socket set, torque wrench, compression tester, multimeter, fuel injector cleaner.

2. Replace Spark Plug

• Remove the ignition coil from cylinder 2.
  • Tools Required: Socket set
• Remove the spark plug from cylinder 2 using a spark plug socket.
• Install a new spark plug, ensuring it is gapped correctly according to manufacturer specifications.
• Reinstall the ignition coil onto the new spark plug.

3. Inspect and Replace Ignition Coil

• If the spark plug replacement does not resolve the issue, proceed to check the ignition coil.
• Remove the ignition coil from cylinder 2.
• Test the ignition coil using a multimeter for resistance and operation.
• If defective, replace it with a new ignition coil and reinstall.

4. Check and Clean Fuel Injector

• Remove the fuel injector from cylinder 2.
• Inspect for clogs or damage; clean if necessary or replace if faulty.
• Reinstall the fuel injector and ensure it is seated properly.

5. Compression Test

• If misfires persist, conduct a compression test on cylinder 2.
• If compression is low, further diagnostics may be required to assess piston rings, valves, or other internal engine components.