how to fix P0300 code on Tesla Model S Original (2012-2020)

Learn how to diagnose and fix P0300 engine misfire in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the parking brake is engaged.
• Disconnect the negative terminal of the 12V battery for safety.

2. Inspect and Replace Spark Plugs

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the engine cover if applicable.
• Use a spark plug socket to remove each spark plug.
• Inspect the spark plugs for wear or carbon buildup.
• Replace any damaged or worn spark plugs with OEM or recommended replacements.
• Torque the new spark plugs to the manufacturer's specifications (typically around 15-20 lb-ft).

3. Check and Replace Ignition Coils

• Tools Required: Socket set, multimeter (optional).
• Carefully disconnect the wiring harness from each ignition coil.
• Remove the ignition coils using a socket set.
• Test the coils with a multimeter for proper resistance if applicable.
• Replace any faulty ignition coils with new ones, ensuring they are securely seated.

4. Inspect Fuel Injectors

• Tools Required: Fuel injector cleaner, basic hand tools.
• Remove the fuel rail according to manufacturer instructions.
• Inspect the fuel injectors for clogs or leaks.
• Clean the injectors using a fuel injector cleaning kit or replace them if necessary.

5. Check for Vacuum Leaks

• Tools Required: Smoke machine or carburetor cleaner.
• Inspect vacuum lines for cracks or disconnections.
• Use a smoke machine to detect any leaks in the intake system.
• Repair or replace any damaged vacuum lines.