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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to avoid electrical shorts.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover (if equipped) using a socket set.
  2. Disconnect the ignition coil connector and remove the ignition coil from cylinder 2.
  3. Remove the spark plug from cylinder 2 using a spark plug socket.
  4. Inspect the spark plug for wear or deposits; replace it if necessary.
  5. Install a new spark plug and torque it to the manufacturer's specification (usually around 13 lb-ft).

3. Inspect and Replace Ignition Coil

• Sub-steps:
  1. Examine the ignition coil for cracks or carbon tracking.
  2. If faulty, install a new ignition coil for cylinder 2, ensuring it is seated properly.
  3. Reconnect the ignition coil connector.

4. Check Fuel Injector

• Sub-steps:
  1. Remove the fuel rail if necessary to access the fuel injector for cylinder 2.
  2. Inspect the injector for clogs or damage.
  3. If the injector is faulty, replace it with a new one.
  4. Reinstall the fuel rail and ensure no leaks are present.

5. Reassemble and Test

• Sub-steps:
  1. Reconnect the negative battery terminal.
  2. Start the engine and let it idle for a few minutes.
  3. Monitor for any misfire codes using the OBD-II scanner.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Spark plug socket
• Compression gauge (if needed)

Parts Required:

• Spark plug (specific to Ford F-150)
• Ignition coil (specific to Ford F-150)
• Fuel injector (if necessary)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Disconnect the battery before working on electrical components.
• Allow the engine to cool before performing any work to prevent burns.