what does P0302 code mean for my Ford F-150 13th Generation (2015-2020)

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, multimeter, compression tester, fuel injector cleaner.
• Ensure the vehicle is parked on a level surface and the engine is cool. Disconnect the battery.

2. Replace Spark Plug

• Steps:
  1. Remove the engine cover if necessary.
  2. Disconnect the ignition coil connector for cylinder 2.
  3. Remove the ignition coil using a socket set.
  4. Remove the spark plug using a spark plug socket.
  5. Inspect the old spark plug for wear (replace if necessary).
  6. Install the new spark plug and torque to manufacturer specifications (typically around 13-15 lb-ft).
  7. Reinstall the ignition coil and reconnect the connector.

3. Replace Ignition Coil (if faulty)

• Steps:
  1. If the ignition coil tests faulty, remove it as described in the previous step.
  2. Install the new ignition coil and ensure it is properly seated.
  3. Reconnect the ignition coil connector.

4. Inspect and Clean Fuel Injector

• Steps:
  1. Disconnect the fuel injector connector for cylinder 2.
  2. Remove the fuel injector using the appropriate tools.
  3. Clean the injector with fuel injector cleaner.
  4. Reinstall the injector and connector.

5. Check for Vacuum Leaks

• Steps:
  1. Inspect all vacuum hoses connected to cylinder 2 for cracks or disconnections.
  2. Use a smoke machine or carburetor cleaner to detect leaks while the engine is running.
  3. Repair any leaks found.

6. Compression Test (if necessary)

• Steps:
  1. Remove the spark plug from cylinder 2.
  2. Install the compression tester into the spark plug hole.
  3. Crank the engine and record the compression reading.
  4. Compare the reading to manufacturer specifications (should be around 120-160 psi).
  5. If compression is low, further investigation may be necessary (e.g., valve or piston issues).