my Tesla Outback 6th Generation (2020-2024) has a check engine light and P0301 code

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to ensure safety while working on electrical components.
• Allow the engine to cool down before proceeding.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable, using a socket set.
  2. Disconnect the ignition coil connector from the spark plug.
  3. Remove the ignition coil from cylinder 1 by unscrewing it and pulling it out gently.
  4. Remove the spark plug using a spark plug socket and ratchet.
  5. Inspect the spark plug for wear. If it is worn or fouled, replace it with a new spark plug according to manufacturer specifications.
  6. Reinstall the new or inspected spark plug and torque it to the manufacturer's specification (typically around 15 ft-lbs).
  7. Reinstall the ignition coil and reconnect the connector.

3. Inspect and Clean Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 1.
  2. Remove the fuel rail if necessary to access the fuel injector.
  3. Carefully remove the fuel injector from cylinder 1.
  4. Clean the injector using a fuel injector cleaner spray or replace if it is found defective.
  5. Reinstall the fuel injector ensuring a proper seal and reconnect the wiring.

4. Test Compression (if misfire persists)

• Sub-steps:
  1. Remove the spark plug for cylinder 1 again.
  2. Insert a compression gauge into the spark plug hole.
  3. Crank the engine a few times to take a reading and record the compression.
  4. Compare the reading against the manufacturer's specifications (typically 140-200 psi).
  5. If compression is low, further investigation into piston rings or valves may be needed.