how to fix P0302 misfire code on Volkswagen Golf MK7.5 (2020-Present)

Solution

1. Preparation

• Gather tools and materials: OBD-II scanner, multimeter, socket set, torque wrench, replacement spark plug, replacement ignition coil (if necessary), and fuel injector cleaner.
• Ensure the vehicle is parked on a flat surface and the engine is cool.

2. Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable using a socket set.
  2. Disconnect the ignition coil connector from the ignition coil on cylinder 2.
  3. Remove the ignition coil by unscrewing any retaining bolts and pulling it out gently.
  4. Remove the spark plug using a spark plug socket and ratchet.
  5. Inspect the old spark plug for color and wear; ensure the gap is set to the manufacturer's specifications (typically around 0.028 inches).
  6. Install the new spark plug, hand-tighten, and then torque to the manufacturer's specifications (usually around 15-20 lb-ft).
  7. Reinstall the ignition coil and reconnect the connector.

3. Replace Ignition Coil (if necessary)

• Sub-steps:
  1. If the ignition coil tests faulty (out of spec), remove the old ignition coil as described in the previous step.
  2. Install the new ignition coil by reversing the removal steps.
  3. Ensure it is seated properly and all connections are secure.

4. Fuel Injector Cleaning

• Sub-steps:
  1. If the injector is suspected to be clogged, remove it according to the service manual.
  2. Clean the injector using a fuel injector cleaner kit or replace the injector if it is faulty.