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

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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Remove the Ignition Coil and Spark Plug

• Tools Required: Socket set, torque wrench.
• Sub-steps:
  1. Remove the engine cover (if applicable) by unscrewing any retaining bolts.
  2. Disconnect the electrical connector from the ignition coil of cylinder 1.
  3. Unscrew the ignition coil using a socket and set it aside.
  4. Use a spark plug socket to remove the spark plug from cylinder 1.

3. Inspect and Replace Components

• Tools Required: Compression tester, cleaning solutions (if needed).
• Sub-steps:
  1. Inspect the spark plug for wear, fouling, or damage. Replace if necessary with a new spark plug (specify the correct type as per manufacturer).
  2. Check the ignition coil for signs of damage or wear. Replace if necessary, ensuring you match the OEM specifications.
  3. Perform a compression test on cylinder 1. If compression is low, further engine diagnosis may be required.
  4. Clean or replace the fuel injector if it shows signs of clogging or poor operation.

4. Reassemble and Test

• Tools Required: Torque wrench for accurate reassembly.
• Sub-steps:
  1. Reinstall the spark plug and torque it to the manufacturer's specifications (typically 15-20 lb-ft).
  2. Reinstall the ignition coil ensuring it is seated correctly and secure the electrical connector.
  3. Replace the engine cover if removed.
  4. Reconnect the negative battery terminal.