my Tesla Model S Original (2012-2020) has a P0301 code, what does that mean?

Learn how to diagnose and fix P0301 cylinder 1 misfire in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts required.
• Disconnect the negative battery terminal to ensure safety.
• Allow the engine to cool down before starting work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil for cylinder 1:
  1. Disconnect the electrical connector from the ignition coil.
  2. Remove the bolts securing the ignition coil and lift it out.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear or carbon buildup; replace it if necessary. Use a spark plug with the specifications recommended by Tesla (usually around 0.040 inches gap).
• Install the new spark plug:
  1. Hand-tighten the spark plug into the cylinder head.
  2. Use a torque wrench to tighten it to the manufacturer’s specified torque (usually around 15 lb-ft).

3. Inspect and Replace Ignition Coil

• Reinstall the ignition coil:
  1. Place the ignition coil back into the spark plug hole.
  2. Secure it with the bolts and reconnect the electrical connector.
• If the ignition coil is faulty, replace it with a new one according to Tesla specifications.

4. Check Fuel Injector

• Locate the fuel injector for cylinder 1.
• Disconnect the electrical connector from the fuel injector.
• Test the injector with a multimeter to ensure it has the correct resistance (usually around 12-16 ohms).
• If faulty, replace the fuel injector with a new one that meets Tesla specs.

5. Final Assembly and Testing

• Reconnect the negative battery terminal.
• Start the engine and let it idle to check for any misfires or irregularities.
• Monitor for any warning lights on the dashboard.