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

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 necessary tools and parts.
• Disconnect the negative terminal of the battery to prevent electrical shock.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, gap gauge.
• Remove the ignition coil cover if applicable.
• Remove the ignition coil from cylinder 1 by unscrewing the retaining bolts.
• Take out the spark plug using a socket wrench.
• Inspect the spark plug for wear or damage. Replace if necessary with a new spark plug (ensure correct type and gap).
• Reinstall the spark plug and torque it to the manufacturer’s specifications (typically around 15 ft-lbs).

3. Inspect and Replace Ignition Coil

• If the spark plug is in good condition, inspect the ignition coil.
• Tools Required: Socket set.
• Remove the ignition coil from cylinder 1.
• Replace the ignition coil with a new one if it shows signs of wear or malfunction.
• Reinstall the ignition coil and secure it with the retaining bolts.

4. Check Fuel Injector

• Inspect the fuel injector for cylinder 1.
• Tools Required: Noid light or multimeter.
• If the injector is not functioning, replace it with a new fuel injector.
• Reinstall the fuel injector and ensure all connections are secure.

5. Reconnect Battery

• Reconnect the negative terminal of the battery after all components are reinstalled.