what does the P0302 code mean for my Volkswagen Golf MK7.5 (2020-Present)?

Solution

1. Preparation

• Gather tools and parts necessary for repair.
• Disconnect the battery to ensure safety while working on electrical components.
• Allow the engine to cool before starting the repair process.

2. Inspect and Replace Ignition Components

• Sub-steps:
  1. Remove the engine cover (if applicable) using a socket set.
  2. Disconnect the ignition coil connector for cylinder 2.
  3. Remove the ignition coil using a socket wrench (torque value: 10 Nm).
  4. Inspect the spark plug in cylinder 2; if worn or fouled, remove it using a spark plug socket (torque value: 25 Nm) and replace it with a new one.
  5. Install the new ignition coil, ensuring it is seated properly and reconnect the electrical connector.
  6. Reinstall the engine cover.

3. Check Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 2.
  2. Test the injector's resistance with a multimeter; it should typically be between 12-16 ohms.
  3. If the injector is faulty, remove it from the intake manifold (use a fuel line removal tool if necessary).
  4. Replace with a new injector, ensuring proper seating and connection.

4. Compression Test

• Sub-steps:
  1. Remove the spark plug from cylinder 2.
  2. Insert a compression tester into the spark plug socket and crank the engine.
  3. Record the compression reading; it should be within the manufacturer's specifications (usually around 150-200 psi).
  4. If the reading is low, further diagnose potential internal engine issues.

5. Reassemble and Final Checks

• Sub-steps:
  1. Reconnect all components and connectors removed during the repair.
  2. Reconnect the battery and clear the fault codes using the OBD-II scanner.
  3. Start the engine and let it idle to ensure all systems are functioning properly.