how to fix P0301 code in Tesla Outback 4th Generation (2010-2014)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery negative terminal to ensure safety.
• Allow the engine to cool before beginning work.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover (if applicable) using a socket set.
  2. Disconnect the spark plug wire or ignition coil connector for cylinder 1.
  3. Use a spark plug socket to remove the spark plug from cylinder 1.
  4. Inspect the spark plug for wear; replace if necessary (NGK or Denso recommended).
  5. Install the new spark plug, tightening to the manufacturer's specified torque (typically 13-16 lb-ft).

3. Check and Replace Ignition Coil

• Sub-steps:
  1. If the spark plug replacement does not resolve the issue, inspect the ignition coil.
  2. Remove the ignition coil from cylinder 1 by unscrewing the mounting bolts.
  3. Test the ignition coil with a multimeter to ensure it meets resistance specifications.
  4. If faulty, install a new ignition coil, ensuring it is seated properly and secured.

4. Inspect and Clean Fuel Injector

• Sub-steps:
  1. If the ignition coil is functioning correctly, inspect the fuel injector for cylinder 1.
  2. Remove the fuel rail (if necessary) to access the injector; ensure you have a container to catch any fuel.
  3. Clean the injector using a fuel injector cleaning kit or replace it if clogged.
  4. Reinstall the fuel rail and ensure all connections are secure.

5. Compression Test

• Sub-steps:
  1. Remove the spark plug from cylinder 1 again.
  2. Insert a compression gauge into the spark plug hole.
  3. Crank the engine for a few seconds and record the compression reading.
  4. If the compression is below specifications (generally around 180 psi), further investigation is needed for internal engine issues.