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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety during repairs.

2. Inspect and Replace Spark Plug

• Remove the spark plug wire or coil pack for cylinder 2.
• Use a spark plug socket and ratchet to remove the spark plug.
• Inspect the spark plug for wear, carbon buildup, or damage.
• If necessary, replace with a new spark plug (OEM recommended).
• Torque the new spark plug to manufacturer specifications (usually around 13-15 ft-lbs).

3. Check and Replace Ignition Coil

• If the spark plug is in good condition, inspect the ignition coil for cylinder 2.
• Remove the ignition coil by unscrewing the bolts or clips.
• Check for signs of damage or corrosion.
• If necessary, replace the ignition coil with a new one and ensure it is securely fastened.

4. Inspect and Clean Fuel Injector

• Locate the fuel injector for cylinder 2 and disconnect the electrical connector.
• Remove any retaining clips and carefully pull the injector out.
• Inspect for clogs or damage; if necessary, clean or replace the injector.
• Reinstall the injector ensuring a proper seal and reconnect the electrical connector.

5. Perform Compression Test (if needed)

• If misfire persists, connect a compression gauge to cylinder 2.
• Crank the engine and record the compression reading.
• Compare with specifications (typically around 120-200 psi for most engines).
• If compression is low, further investigation into the engine internals may be required.