how to fix P0300 misfire code on Tesla Outback 6th Generation (2020-2024)

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, multimeter, fuel pressure gauge, vacuum gauge, smoke machine.
• Allow the engine to cool before working on the vehicle.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plugs

• Remove the engine cover if applicable.
• Using a socket set, carefully remove the spark plugs from the engine.
  • Torque Specification: 13 lb-ft when installing new spark plugs.
• Inspect the spark plugs for wear, carbon buildup, or damage.
• Replace with OEM or equivalent spark plugs if faulty.

3. Check and Replace Ignition Coils

• Remove the ignition coils from the spark plugs.
• Test each ignition coil with a multimeter to check for proper resistance.
• Replace any faulty ignition coils with OEM parts.
• Reinstall ignition coils ensuring they are securely attached.

4. Inspect Fuel Injectors

• Use the fuel pressure gauge to verify proper fuel pressure.
  • Specification: Should be within manufacturer’s recommended range.
• If pressure is low, inspect the fuel pump and fuel filter for clogs or failures.
• Clean or replace any clogged fuel injectors as necessary.

5. Check for Vacuum Leaks

• Use a smoke machine to detect vacuum leaks.
• Inspect all hoses and gaskets for signs of wear or disconnection.
• Replace any damaged vacuum hoses or gaskets.

6. Reassemble and Reset

• Reinstall any components removed during the inspection.
• Reconnect the negative battery terminal.
• Clear the P0300 code using the OBD-II scanner.