how to fix a P0302 code on Ford F-150 13th Generation (2015-2020)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent any electrical shorts.

2. Spark Plug and Ignition Coil Replacement

• Tools Required: Socket set, torque wrench, ratchet, spark plug socket.
• Remove the engine cover (if applicable) to access the ignition components.
• Disconnect the electrical connector from the ignition coil for cylinder 2.
• Remove the bolt securing the ignition coil and pull the coil out gently.
• Remove the spark plug using a spark plug socket and inspect for wear or damage. Replace if necessary.
• Install a new spark plug, torquing it to manufacturer specifications (typically 13 lb-ft).
• Install the new ignition coil, securing it with the bolt and reconnecting the electrical connector.

3. Fuel Injector Inspection and Replacement (if necessary)

• Tools Required: Fuel line disconnect tool, socket set.
• Relieve fuel system pressure by removing the fuel pump relay and starting the engine until it stalls.
• Disconnect the electrical connector and fuel line from the fuel injector for cylinder 2.
• Remove the fuel injector retaining clip and pull the injector out.
• Inspect the injector for clogs and clean or replace it as needed.
• Install a new injector, ensuring it is seated properly, and reconnect the fuel line and electrical connector.

4. Compression Test (if misfire persists)

• Tools Required: Compression tester.
• Remove the spark plug for cylinder 2.
• Insert the compression tester and crank the engine for a few seconds.
• Compare the reading to manufacturer specifications (typically 120-180 psi).
• If the compression is low, further investigation into valve or piston issues is warranted.