how to fix Ford F-150 13th Generation (2015-2020) check engine light P0302

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 avoid electrical shorts.

2. Inspect and Replace Spark Plug

• Remove the engine cover if applicable using a socket set.
• Locate cylinder 2 spark plug (consult vehicle manual for location).
• Use a spark plug socket to remove the spark plug.
• Inspect the spark plug for wear or damage. Replace if necessary.
• Install a new spark plug with a gap of 0.054 inches (1.38mm), torque to 13 lb-ft (17.6 Nm).

3. Check and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil.
• Remove the ignition coil bolt, then carefully pull out the ignition coil.
• Inspect the ignition coil for cracks or burn marks. Replace if defective.
• Install a new ignition coil and secure it with the bolt. Reconnect the electrical connector.

4. Inspect Fuel Injector

• Locate the fuel injector for cylinder 2.
• Disconnect the fuel injector connector.
• Use a multimeter to test the injector's resistance (should be between 12-16 ohms).
• If faulty, replace the fuel injector and ensure proper installation.

5. Compression Test

• Remove the spark plug for cylinder 2.
• Insert the compression tester into the spark plug hole.
• Crank the engine and record the compression reading.
• Compare the reading to manufacturer specifications; readings should be within the range of 90-150 psi.
• If readings are low, further engine diagnosis may be required.