my Tesla Model S Original (2012-2020) has a P0300 code, what does that mean?

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: OBD-II scanner, socket set, multimeter, torque wrench, replacement spark plugs, ignition coils, and gaskets.
• Ensure the vehicle is parked on a level surface and the engine is cool.

2. Inspect Ignition Components

• Sub-step 1: Remove the engine cover (if applicable) using a socket set.
• Sub-step 2: Disconnect the electrical connectors from the ignition coils.
• Sub-step 3: Remove the ignition coils and inspect them for any visible signs of damage or wear.
• Sub-step 4: Remove spark plugs using a spark plug socket and inspect for fouling or excessive wear.
• Sub-step 5: Replace damaged spark plugs and ignition coils with new components.

3. Check Fuel Delivery

• Sub-step 1: Connect a fuel pressure gauge to the fuel rail and turn the ignition to the ON position without starting the engine.
• Sub-step 2: Verify that the fuel pressure is within manufacturer specifications.
• Sub-step 3: If pressure is low, inspect the fuel pump and replace if necessary.
• Sub-step 4: Check fuel injectors for proper operation using a multimeter; replace any faulty injectors.

4. Inspect for Vacuum Leaks

• Sub-step 1: Visually inspect all vacuum hoses for cracks or disconnections.
• Sub-step 2: Use a smoke machine or carburetor cleaner to check for leaks around intake manifold gaskets and throttle body.
• Sub-step 3: Replace any damaged hoses or gaskets as needed.

5. Test Compression

• Sub-step 1: Remove spark plugs again for access to cylinders.
• Sub-step 2: Insert a compression tester into each cylinder in turn and crank the engine.
• Sub-step 3: Compare readings across cylinders; replace head gasket or repair as necessary if compression is low.