why does my Genesis G70 have a check engine light and P0302 code?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety.
• Allow the engine to cool down before starting work.

2. Inspect and Replace Spark Plug

• Remove the ignition coil for cylinder 2:
  • Use a socket set to unbolt the coil.
• Remove the spark plug for cylinder 2:
  • Use a spark plug socket and ratchet to unscrew the plug.
• Inspect the spark plug for wear or damage; replace if necessary:
  • Use a new spark plug with the appropriate heat range (refer to manufacturer specifications).
• Reinstall the spark plug and ignition coil:
  • Torque the spark plug to manufacturer specifications (typically 13-15 lb-ft).

3. Check and Replace Ignition Coil (if needed)

• If the ignition coil shows signs of damage or failure, replace it:
  • Remove the faulty coil and install a new one.
  • Ensure that it is seated properly and reattach the connector.

4. Inspect Fuel Injector

• Remove the fuel rail to access the injector for cylinder 2:
  • Use a socket set to unbolt the rail and gently pull it away after relieving fuel pressure.
• Clean or replace the fuel injector as necessary:
  • If cleaning, use a fuel injector cleaner; if replacing, ensure the new injector is compatible.
• Reinstall the fuel rail, securing it with the appropriate torque specifications.

5. Check for Vacuum Leaks

• Inspect all vacuum hoses and the intake manifold:
  • Replace any damaged or cracked hoses.
• Use a smoke machine or carb cleaner to check for leaks while the engine is running.