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

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to ensure safety before starting work.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2:
  • Unplug the electrical connector.
  • Unscrew the mounting bolt using a socket set.
• Remove the spark plug using a spark plug socket and ratchet.
• Inspect the spark plug for wear; replace if necessary. Use spark plugs that meet OEM specifications.
• Install the new spark plug and torque it to the manufacturer’s specifications (usually around 15-20 lb-ft).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Inspect and Replace Ignition Coil

• If the spark plug is fine, check the ignition coil for faults:
  • Use a multimeter to measure resistance across the ignition coil terminals.
• If the ignition coil is defective, remove it and replace with a new OEM coil.
• Reinstall the ignition coil ensuring it clicks into place and reconnect the electrical connector.

4. Inspect and Clean Fuel Injector

• If the ignition components are fine, check the fuel injector:
  • Remove the fuel injector from the fuel rail (ensure fuel pressure is relieved first).
• Inspect the injector for clogs or leaks.
• Clean the fuel injector using a dedicated fuel injector cleaner.
• Reinstall the fuel injector ensuring proper seating and reconnect the fuel line.