how to fix P0302 code on 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 battery to prevent electrical shorts.

2. Inspect and Replace Ignition Components

1. Remove the engine cover if equipped.
2. Disconnect the ignition coil connector for cylinder 2.
3. Remove the ignition coil using a socket set (typically 8mm or 10mm).
4. Inspect the spark plug; if worn or fouled, replace it using a spark plug socket.
5. Install the new ignition coil and reconnect the electrical connector.

3. Check and Clean Fuel Injector

1. Locate the fuel injector for cylinder 2.
2. Disconnect the fuel injector connector.
3. Remove the fuel injector using an appropriate socket (usually 10mm).
4. Inspect the injector for blockages or carbon buildup; clean or replace if necessary.
5. Reinstall the fuel injector and reconnect the electrical connector.

4. Perform Compression Test

1. Remove the spark plug from cylinder 2.
2. Insert a compression gauge into the spark plug hole.
3. Crank the engine for a few seconds and read the compression value.
4. Compare the reading to manufacturer specifications to determine if there are internal engine issues.

5. Reassemble and Test

1. Reinstall the spark plug and connect all components removed during the repair.
2. Reconnect the battery.
3. Start the engine and monitor for any misfire codes.