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

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a flat surface, and the engine is cool.
• Disconnect the battery to prevent electrical shock.

2. Replace Ignition Coil

1. Remove Engine Cover:
   • Use a socket set to remove any bolts securing the engine cover if present.
2. Disconnect Ignition Coil Connector:
   • Press the tab and pull the connector off the ignition coil for cylinder 2.
3. Remove Ignition Coil:
   • Unbolt the ignition coil using the appropriate socket. Pull it out gently.
4. Install New Ignition Coil:
   • Insert the new ignition coil into place and secure it with the bolt.
5. Reconnect the Ignition Coil Connector:
   • Ensure a firm click to confirm connection.

3. Replace Spark Plug

1. Remove Spark Plug:
   • Using a spark plug socket, carefully unscrew the spark plug from cylinder 2.
2. Inspect Old Spark Plug:
   • Check for signs of wear, carbon deposits, or damage.
3. Install New Spark Plug:
   • Pre-set the gap to manufacturer specifications. Screw in the new spark plug and tighten to the specified torque (typically 15-20 lb-ft).

4. Check and Replace Fuel Injector (if necessary)

1. Disconnect Fuel Injector Connector:
   • Remove the connector from the fuel injector for cylinder 2.
2. Remove Fuel Rail:
   • Unbolt and lift the fuel rail to access the injector (ensure you depressurize the fuel system prior).
3. Replace Fuel Injector:
   • Remove the old injector and replace it with a new one, ensuring to lubricate the O-ring with engine oil for proper sealing.
4. Reassemble Fuel Rail:
   • Reattach the fuel rail and ensure all connectors are secure.