what does it mean when my Genesis G70 IG (2017-2023) has a misfire code P0301?

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 materials.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Remove Spark Plug

• Use a spark plug socket to remove the spark plug from cylinder 1.
• Inspect the spark plug for signs of fouling or wear. Replace if necessary.

3. Inspect and Test Ignition Coil

• Remove the ignition coil from cylinder 1.
• Inspect for cracks or damage. If faulty, replace with a new ignition coil.
• Use a multimeter to test the resistance of the ignition coil according to manufacturer specifications.

4. Test Fuel Injector

• Disconnect the fuel injector connector for cylinder 1.
• Use a multimeter to test the injector's resistance. Replace if it falls outside the specified range.
• Clean the injector using a fuel injector cleaning kit if it is clogged.

5. Reassemble Components

• Reinstall the ignition coil and spark plug, ensuring the correct torque specifications are followed (typically around 15-20 ft-lbs for spark plugs).
• Reconnect the negative battery terminal.

6. Clear Codes and Test Drive

• Use the OBD-II scanner to clear the P0301 code.
• Start the engine and allow it to reach operating temperature, then take the vehicle for a test drive to monitor performance.