what does the P0302 code indicate for my Ford F-150 12th Generation (2009-2014)

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, compression gauge, multimeter, fuel injector cleaner.
• Ensure the vehicle is parked on a flat surface and the engine is cool. Disconnect the battery to prevent any electrical shorts.

2. Replace Spark Plug and Ignition Coil

• Sub-steps:
  1. Remove the engine cover (if equipped) to gain access to the ignition components.
  2. Disconnect the electrical connector from the ignition coil at cylinder 2.
  3. Remove the bolt securing the ignition coil using a socket and ratchet.
  4. Pull the ignition coil straight out of the spark plug hole.
  5. Remove the spark plug from cylinder 2 using a spark plug socket.
  6. Install a new spark plug, ensuring it is gapped correctly to manufacturer specifications.
  7. Reinstall the ignition coil onto the new spark plug and secure it with the bolt. Reconnect the electrical connector.

3. Check and Clean Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 2.
  2. Remove the fuel rail if necessary to access the injector.
  3. Inspect the fuel injector for clogs or damage.
  4. Clean the injector using a fuel injector cleaner or replace it if necessary.
  5. Reinstall the fuel injector and reconnect the fuel rail.

4. Perform Compression Test

• Sub-steps:
  1. Remove the spark plug from cylinder 2.
  2. Insert the compression gauge into the spark plug hole.
  3. Crank the engine for a few seconds to obtain a compression reading.
  4. Compare the reading to manufacturer specifications. If low, further investigation into the engine's internal components is needed.