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

Solution

1. Preparation

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

2. Replace Spark Plug and Ignition Coil

• Tools Required: Socket set, torque wrench, dielectric grease.
• Remove the engine cover if applicable.
• Disconnect the ignition coil connector for cylinder 2.
• Unbolt the ignition coil using the socket set and remove it from the spark plug.
• Use the socket set to remove the spark plug.
• Inspect the old spark plug for any signs of fouling or damage.
• Install the new spark plug and torque it to the manufacturer's specifications (typically around 13-15 lb-ft).
• Apply dielectric grease to the ignition coil boot and reinstall the ignition coil, tightening to specifications (usually around 5-7 lb-ft).

3. Replace Fuel Injector (if necessary)

• Tools Required: Fuel line removal tool, socket set, torque wrench.
• Relieve the fuel system pressure by removing the fuel pump relay and starting the engine until it stalls.
• Disconnect the fuel injector connector for cylinder 2.
• Remove any retaining clips and use the fuel line removal tool to disconnect the fuel line.
• Unbolt and remove the fuel injector from the rail.
• Install the new fuel injector and ensure it is seated correctly.
• Reconnect the fuel line and clips, and reconnect the injector connector.

4. Reconnect Battery and Clear Codes

• Reconnect the battery terminal.
• Use the OBD-II scanner to clear the P0302 code from the system.
• Start the engine and allow it to idle.