how to fix the P0302 misfire code in my Tesla Model S Original (2012-2020)

Learn how to diagnose and fix P0302 cylinder 2 misfire in Tesla Model S. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the 12V battery to ensure safety during repairs.

2. Replace Spark Plug (if necessary)

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the engine cover if applicable.
• Disconnect the ignition coil connector and remove the ignition coil from cylinder 2.
• Remove the old spark plug using a spark plug socket.
• Install the new spark plug by hand to avoid cross-threading, then torque to the manufacturer’s specification (typically around 15-20 ft-lbs).
• Reinstall the ignition coil and reconnect the ignition coil connector.

3. Inspect and Replace Ignition Coil (if necessary)

• Tools Required: Socket set.
• If the ignition coil appears damaged, replace it with a new one.
• Remove the ignition coil from cylinder 2 as described above.
• Install a new ignition coil and ensure it is seated correctly.
• Reconnect the ignition coil connector.

4. Check Fuel Injector (if necessary)

• Tools Required: Fuel injector removal tool, torque wrench.
• Disconnect the fuel line and electrical connector from the fuel injector.
• Remove the fuel injector from cylinder 2.
• Inspect the injector for clogs or damage; if necessary, replace with a new injector.
• Reinstall the fuel injector and reconnect the fuel line and electrical connector.

5. Perform Compression Test (if necessary)

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 2.
• Insert the compression tester and crank the engine to obtain a reading.
• Compare the compression reading to manufacturer specifications; if low, further diagnosis may be required.