how to resolve the P0301 misfire code in my Tesla Model S

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

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the 12V battery for safety.
• Allow the vehicle to cool down to prevent burns.

2. Inspect and Replace Spark Plug

1. Remove the engine cover if necessary for access.
2. Use a socket set to carefully remove the spark plug from cylinder 1.
3. Inspect the spark plug for wear and replace if necessary.
   • Torque specification: 15 lb-ft for reinstallation.

3. Check and Replace Ignition Coil

1. Disconnect the electrical connector from the ignition coil.
2. Remove the ignition coil from cylinder 1 using a socket set.
3. Inspect for physical damage and replace with a new ignition coil if necessary.
4. Reinstall the ignition coil and reconnect the electrical connector.

4. Compression Test

1. Remove the spark plug from cylinder 1.
2. Install a compression gauge into the spark plug hole.
3. Crank the engine to obtain the compression reading.
4. Compare the reading to the manufacturer's specifications (typically around 180-200 psi).
5. If compression is low, further engine diagnostics may be needed.

5. Inspect Fuel Injector

1. Disconnect the fuel injector connector.
2. Use a multimeter to check the injector’s resistance (should typically be around 12-16 ohms).
3. If the injector is faulty, replace it.
4. Reconnect the fuel injector and its connector.