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

Solution

1. Preparation

• Gather tools and parts required.
• Ensure the vehicle is on a level surface and secure it with wheel chocks.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Ignition Components

• Tools Required: Socket set, torque wrench, spark plug socket, anti-seize lubricant.
• Remove the engine cover (if applicable) using the socket set.
• Detach the ignition coils from the spark plugs by pulling the connectors straight off.
• Remove the spark plugs using a spark plug socket. Inspect for wear or damage. Replace with OEM-spec spark plugs if needed.
• Apply a small amount of anti-seize lubricant to the threads of the new spark plugs.
• Reinstall the spark plugs and torque them to the manufacturer’s specifications (typically around 13-15 lb-ft).
• Reinstall the ignition coils and reconnect the electrical connectors.

3. Check and Clean Fuel System

• Tools Required: Fuel pressure gauge, injector cleaner.
• Attach the fuel pressure gauge to the fuel rail and turn the ignition to the "ON" position without starting the engine. Check for proper fuel pressure as per manufacturer specifications.
• If pressure is low, inspect the fuel pump and filter for clogs or failures.
• Use an injector cleaner in the fuel tank if injectors are suspected to be dirty.

4. Inspect Air Intake and Vacuum Lines

• Tools Required: Basic hand tools.
• Remove the air filter and inspect the air intake duct for any obstructions or leaks.
• Check vacuum lines for cracks or disconnections. Replace any damaged lines.