how to fix P0301 misfire code on Tesla Outback 6th Generation (2020-2024)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, torque wrench, ratchet.
• Remove the ignition coil from cylinder 1:
  • Unplug the electrical connector.
  • Remove the mounting bolts and lift the coil out.
• Remove the spark plug:
  • Use the spark plug socket to unscrew and remove the old spark plug.
• Inspect the old spark plug for wear or fouling.
• Install a new spark plug:
  • Apply anti-seize compound (if recommended) and thread the new spark plug into place.
  • Torque to the manufacturer's specification (usually around 13-15 lb-ft).
• Reinstall the ignition coil.

3. Test Fuel Injector

• Tools Required: Fuel injector tester (if available) or multimeter.
• Disconnect the fuel injector connector.
• Test for proper resistance using a multimeter (usually around 12-16 ohms for most injectors).
• If the injector is faulty, replace it:
  • Remove the injector from its rail or manifold.
  • Install the new injector, ensuring proper sealing and connection.

4. Perform Compression Test

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 1.
• Insert the compression tester into the spark plug hole.
• Crank the engine for a few seconds and read the compression value.
• If compression is below the manufacturer’s specifications, further inspection of valves or piston rings may be required.

5. Check for Vacuum Leaks

• Tools Required: Smoke machine or propane torch (for testing).
• Inspect all vacuum hoses connected to the intake manifold.
• Use a smoke machine to identify leaks; if using propane, carefully introduce it near suspected leaks and watch for RPM changes.