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

Solution

1. Preparation

• Gather tools and parts needed for repair.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative terminal of the battery to prevent electrical shorts.

2. Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil from Cylinder 2 by unscrewing the retaining bolt.
• Pull the ignition coil straight out to access the spark plug.
• Use a spark plug socket to remove the old spark plug.
• Inspect the spark plug threads for damage and clean if necessary.
• Install the new spark plug by hand to avoid cross-threading and then torque to the manufacturer’s specification (typically around 13 lb-ft).
• Reinstall the ignition coil, ensuring it fits snugly.

3. Inspect and Replace Ignition Coil (if necessary)

• Tools Required: Socket set, ratchet.
• If the ignition coil is faulty (no spark), remove it from the engine.
• Install a new ignition coil onto Cylinder 2, securing it with the retaining bolt.
• Reconnect the electrical connector.

4. Clean or Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector puller, hand tools.
• If the fuel injector is clogged, remove it from Cylinder 2 using the injector puller.
• Clean the injector using an ultrasonic cleaner or replace it with a new one.
• Reinstall the cleaned or new fuel injector, ensuring it is properly seated.

5. Compression Test (if necessary)

• Tools Required: Compression tester.
• Remove the spark plug from Cylinder 2.
• Insert the compression tester into the spark plug hole and crank the engine to take the reading.
• Compare the compression reading to the manufacturer's specifications; if low, investigate further for mechanical issues.