how to fix P0301 code in my Genesis G70 IG (2017-2023)

Learn how to diagnose and fix P0301 cylinder 1 misfire in Genesis G70 (2017-2023). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil from cylinder 1 by unscrewing the bolts and disconnecting the electrical connector.
• Use the spark plug socket to remove the old spark plug.
• Inspect the new spark plug gap and adjust if necessary to manufacturer specifications.
• Install the new spark plug by hand to avoid cross-threading, then torque to the specified value (typically around 13-15 lb-ft).
• Reattach the ignition coil and reconnect the electrical connector.

3. Replace Ignition Coil (if needed)

• Tools Required: Ratchet and socket set.
• If the ignition coil is found to be defective, remove it from cylinder 1.
• Install the new ignition coil in the same position and secure it with the bolts.
• Reconnect the electrical connector to the ignition coil.

4. Inspect and Clean Fuel Injector

• Tools Required: Fuel injector cleaner, cleaning kit (if necessary).
• Remove the fuel injector from cylinder 1, taking care to disconnect the electrical connector and fuel line.
• Clean the injector using an appropriate cleaning solution or replace it if it is clogged or damaged.
• Reinstall the fuel injector and reconnect all fittings.

5. Reassemble and Test

• Reconnect the negative battery terminal.
• Start the engine and allow it to reach normal operating temperature.
• Monitor for any check engine light activation and ensure the engine runs smoothly.