how to address P0300 random misfire in Tesla Outback 6th Generation (2020-2024)

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, socket set, torque wrench, fuel injector cleaner, and vacuum gauge.
• Disconnect the negative terminal of the battery to ensure safety during repairs.

2. Inspect and Replace Spark Plugs

• Remove the engine cover (if applicable) using a socket set.
• Disconnect ignition coil connectors and remove the ignition coils.
• Unscrew the spark plugs using a spark plug socket.
• Inspect spark plugs for wear or carbon buildup; replace them with OEM-spec plugs if necessary (torque to manufacturer specifications).
• Reinstall ignition coils and connectors ensuring they are secured properly.

3. Check and Replace Ignition Coils

• Using a multimeter, test the resistance of each ignition coil; compare results with the manufacturer specifications.
• If any coils are out of specification, replace them with new units (ensure proper alignment and connection).
• Reinstall any connectors and secure them.

4. Inspect Fuel Injectors

• Remove the fuel rail (ensure fuel pressure is relieved prior to removal).
• Inspect and clean fuel injectors with approved fuel injector cleaner.
• Reinstall the fuel rail and ensure all connections are secure with the appropriate torque.

5. Check for Vacuum Leaks

• Perform a smoke test to identify any vacuum leaks in the intake system.
• Repair or replace any damaged hoses or gaskets found during the inspection.