what does code P0302 mean for my Ford F-150 12th Generation (2009-2014)

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Remove the ignition coil for cylinder 2 by unscrewing its mounting bolts and disconnecting the electrical connector.
• Remove the spark plug using a spark plug socket and ratchet.
• Inspect the spark plug for wear or damage; replace if necessary with a new spark plug that meets OEM specifications.
• Reinstall the spark plug and torque it to the manufacturer’s specifications (typically 13-15 lb-ft).

3. Check and Replace Ignition Coil

• If the spark plug inspection indicates it's in good condition, test the ignition coil for cylinder 2 using a multimeter.
• If the coil is faulty, replace it with a new coil compatible with the vehicle.
• Reinstall the ignition coil onto the spark plug and reconnect the electrical connector.

4. Inspect and Replace Fuel Injector

• If the ignition components are functional, inspect the fuel injector for cylinder 2 for clogs or faults.
• Remove the fuel injector by disconnecting the electrical connector and unscrewing the retaining clips.
• Replace the fuel injector with a new one according to the manufacturer's specifications.
• Ensure proper seating and connection before reassembling.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the codes and reset the check engine light.