how to fix P0302 code on Ford F-150 Fourteenth Generation (2021-present)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the battery to ensure safety.
• Allow the engine to cool down before working on it.

2. Inspect and Replace Ignition Components

1. Remove Engine Cover (if applicable)

   • Use a socket set to remove any bolts securing the engine cover.
   • Carefully lift off the cover and set it aside.

2. Replace Spark Plug

   • Remove the ignition coil from cylinder 2 by unscrewing the bolts using a socket wrench.
   • Disconnect the electrical connector from the ignition coil.
   • Remove the spark plug using a spark plug socket and ratchet.
   • Inspect the spark plug for wear and replace it with a new one, ensuring the gap is set to manufacturer specifications (typically around 0.030 inches).

3. Replace Ignition Coil

   • If the ignition coil shows signs of wear (cracks, carbon tracking), replace it with a new one.
   • Reinstall the ignition coil by connecting the electrical connector and securing it with the bolts.

3. Test Fuel Injector

1. Check Injector Operation
   • Connect a noid light to the fuel injector connector for cylinder 2 to verify it is receiving a signal.
   • If the injector is not firing, check wiring and replace the injector if necessary.

4. Perform Compression Test

1. Conduct Compression Test
   • Remove the spark plug from cylinder 2 and connect the compression gauge.
   • Crank the engine and record the compression reading. Compare it to the manufacturer's specifications. If compression is low, further diagnosis is needed for a potential internal engine issue.

5. Check for Vacuum Leaks

1. Inspect Vacuum Lines
   • Check all vacuum hoses connected to the intake manifold for cracks or disconnections.
   • Use a smoke machine or carburetor cleaner to detect any leaks around the intake manifold gasket.