how to fix a P0302 code on Volkswagen Golf Eighth Generation (2020-present)

Solution

1. Preparation

• Gather tools and parts needed.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Sub-steps:
  • Remove the engine cover if necessary (use a socket set).
  • Locate the spark plug for cylinder 2 and remove it using a spark plug socket.
  • Inspect the spark plug for wear; replace it if it shows signs of fouling or damage.
  • Gap the new spark plug to manufacturer specifications (typically 0.028-0.032 inches for many VW models).
  • Install the new spark plug and torque it to the manufacturer’s specification (usually around 20 Nm).

3. Inspect and Replace Ignition Coil

• Sub-steps:
  • Disconnect the electrical connector from the ignition coil.
  • Remove the ignition coil from cylinder 2 by pulling it straight out.
  • Install the new ignition coil, ensuring it seats properly.
  • Reconnect the electrical connector.

4. Check and Replace Fuel Injector

• Sub-steps:
  • If the injector is faulty, disconnect the electrical connector and fuel line (ensure you have a rag to catch any fuel).
  • Remove the retaining clips and pull out the injector from the rail.
  • Install the new fuel injector and reconnect the fuel line and electrical connector.
  • Make sure to check for leaks after reassembly.

5. Reassemble and Test

• Sub-steps:
  • Reinstall any components removed for access (like the engine cover).
  • Reconnect the negative battery terminal.
  • Start the engine and monitor for any misfire codes or leaks.