how to fix P0302 code on my Genesis G70 IG (2017-2023)

Solution

1. Preparation

• Gather tools and parts required.
• Disconnect the battery to ensure safety.
• Allow the engine to cool before starting work.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Locate the spark plug for cylinder 2.
  3. Use a spark plug socket and ratchet to remove the old spark plug.
  4. Inspect the old spark plug for wear, carbon buildup, or damage.
  5. If necessary, install a new spark plug to the manufacturer's specifications (typically 13-15 lb-ft torque).

3. Inspect and Replace Ignition Coil

• Sub-steps:
  1. Remove the ignition coil connector for cylinder 2.
  2. Unbolt the ignition coil from the cylinder head.
  3. Install a new ignition coil, ensuring it is seated properly.
  4. Reconnect the ignition coil connector.

4. Test and Replace Fuel Injector (if necessary)

• Sub-steps:
  1. Remove the fuel rail to access the injector for cylinder 2.
  2. Disconnect the fuel injector connector.
  3. Use a fuel injector tester to check operation; replace if it fails.
  4. Reinstall the injector and fuel rail, ensuring proper sealing and connection.

5. Reassemble and Reconnect

• Sub-steps:
  1. Reinstall any components removed (engine cover, connectors).
  2. Reconnect the battery.
  3. Clear the error codes using an OBD-II scanner.