what does code P0303 indicate for my Tesla Model S Original (2012-2020)?

Learn how to diagnose and fix P0303 cylinder 3 misfire in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the battery to ensure safety.
• Allow the engine to cool before starting work.

2. Remove Spark Plug

• Tools Required: Spark plug socket, ratchet, extension.
• Remove the ignition coil from cylinder 3 by unscrewing the retaining bolts.
• Disconnect the electrical connector from the ignition coil.
• Carefully remove the spark plug using the spark plug socket.

3. Inspect and Replace Components

• Inspect Spark Plug: Check for signs of wear, fouling, or damage. Replace if necessary.
• Inspect Ignition Coil: If the ignition coil shows signs of damage or malfunction, replace it with a new unit.
• Inspect Fuel Injector: If the injector is clogged or malfunctioning, it should be cleaned or replaced.

4. Reassemble Components

• Install the new or inspected spark plug and torque it to the manufacturer’s specifications (typically around 15-20 lb-ft).
• Reconnect the ignition coil and ensure it is securely fastened.
• Reconnect the electrical connector to the ignition coil.

5. Clear Codes and Test

• Reconnect the battery.
• Use the OBD-II scanner to clear the P0303 code.
• Start the vehicle and allow it to reach operating temperature.