how to fix P0302 code on my Volkswagen Golf Seventh Generation (2013-2020)

Solution

1. Preparation

• Gather the necessary tools and parts.
• Ensure the vehicle is parked on a level surface with the engine off and cool.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Disconnect the ignition coil connector from cylinder 2.
  3. Remove the ignition coil by unscrewing the retaining bolts.
  4. Remove the spark plug using a spark plug socket.
  5. Inspect the spark plug for signs of wear, carbon buildup, or damage.
  6. Replace the spark plug with a new one that meets OEM specifications (usually around 0.028 inches gap).

Tools Required: Spark plug socket, ratchet, torque wrench.

3. Test and Replace Ignition Coil

• Sub-steps:
  1. Test the ignition coil using a multimeter to check for proper resistance.
  2. If the coil is faulty, replace it with a new one.
  3. Reconnect the ignition coil and ensure it is seated properly.

Tools Required: Multimeter, ratchet, torque wrench.

4. Inspect and Clean Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 2.
  2. Remove the fuel injector using the appropriate tool.
  3. Inspect the injector for clogs and clean if necessary with injector cleaner.
  4. If the injector is faulty, replace it with a new one.
  5. Reinstall the injector and reconnect the electrical connector.

Tools Required: Fuel injector puller, cleaning solution.

5. Check Compression

• Sub-steps:
  1. Remove the spark plug from cylinder 2 and the adjacent cylinders.
  2. Insert the compression gauge into the spark plug hole.
  3. Crank the engine to obtain a reading.
  4. Compare the reading to manufacturer specifications. If low, further engine diagnostics may be necessary.

Tools Required: Compression gauge.