how to fix the P0301 misfire code on Tesla Outback 4th Generation (2010-2014)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety while working on the ignition system.

2. Replace Spark Plug

• Sub-steps:
  1. Remove the ignition coil from cylinder 1 by unscrewing the retaining bolts.
  2. Disconnect the electrical connector from the ignition coil.
  3. Extract the spark plug using a spark plug socket and ratchet.
  4. Inspect the old spark plug and ensure the gap is within specifications (0.028-0.031 inches) for the replacement plug.
  5. Install the new spark plug by hand to avoid cross-threading, then torque it to 13 lb-ft (17.7 Nm).
  6. Reinstall the ignition coil and reconnect the electrical connector.

3. Replace Ignition Coil (if necessary)

• Sub-steps:
  1. If the ignition coil was found defective during diagnostics, remove it by unfastening the bolts.
  2. Install the new ignition coil in place, ensuring proper alignment.
  3. Reconnect the electrical connector and secure the ignition coil with bolts, torquing them to 8.7 lb-ft (12 Nm).

4. Test Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 1.
  2. Using a multimeter, check the resistance of the fuel injector; it should be within the manufacturer’s specifications (typically 12-16 ohms).
  3. If faulty, remove the injector and install a new one, ensuring proper seating and connection.

5. Check for Vacuum Leaks

• Sub-steps:
  1. Inspect all vacuum lines connected to the intake manifold for cracks or disconnections.
  2. Use a smoke machine or carburetor cleaner around suspected areas while the engine is running to identify leaks.
  3. Replace any damaged vacuum lines as necessary.