how to fix P0302 code in Porsche Cayenne E3 (2018-Present)

Learn how to diagnose and fix P0302 cylinder 2 misfire in Porsche Cayenne E3. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts required for repairs.
• Disconnect the battery to prevent electrical shorts.
• Allow the engine to cool down before starting work.

2. Replace Spark Plug (if faulty)

• Tools Required: Socket set, torque wrench, spark plug socket.
• Sub-steps:
  1. Remove the engine cover (if applicable) to access the spark plugs.
  2. Using the spark plug socket, carefully remove the spark plug from cylinder 2.
  3. Inspect the old spark plug for wear or damage, and replace with a new spark plug if necessary.
  4. Torque the new spark plug to the manufacturer’s specifications (typically around 20-30 Nm).
  5. Reinstall the engine cover (if applicable).

3. Replace Ignition Coil (if faulty)

• Tools Required: Socket set, torque wrench.
• Sub-steps:
  1. Disconnect the electrical connector from the ignition coil on cylinder 2.
  2. Remove the ignition coil by unscrewing the retaining bolts.
  3. Install the new ignition coil and secure it with bolts to the specified torque.
  4. Reconnect the electrical connector to the new ignition coil.

4. Testing Fuel Injector (if faulty)

• Tools Required: Fuel injector cleaning kit or multimeter.
• Sub-steps:
  1. Disconnect the fuel injector connector on cylinder 2.
  2. Use a multimeter to test the injector’s resistance; refer to the specification (typically 12-16 ohms).
  3. If the injector is faulty, remove it by unscrewing the retaining clips and pulling it out of the rail.
  4. Install the new fuel injector and reconnect the electrical connector.

5. Reconnect Battery

• Reconnect the battery terminals and ensure they are tight.