how to fix P0302 misfire code on my Tesla Outback 5th Generation (2015-2019)

Solution

1. Preparation

• Gather tools and parts required. Ensure the vehicle is parked on a level surface and the engine is off and cool.
• Tools Required: OBD-II scanner, socket set, torque wrench, compression tester, multimeter, fuel injector cleaning kit (if needed), and new spark plugs and ignition coils (if replacement is necessary).

2. Inspect and Replace Spark Plug

• Remove the engine cover (if applicable) to access the spark plugs.
• Using a socket set, remove the spark plug from cylinder 2.
  • Safety Warning: Ensure the engine is cool to prevent burns.
• Inspect the spark plug for wear or fouling. Replace if necessary.
• Install the new spark plug with the correct gap (check manufacturer specifications).
• Torque the spark plug to the specified value (typically around 13-20 lb-ft).

3. Check and Replace Ignition Coil

• Disconnect the ignition coil connector and remove the ignition coil from cylinder 2 using a socket set.
• If swapped for testing, note the outcome. If malfunctioning, replace with a new ignition coil.
• Reinstall the new ignition coil and reconnect the electrical connector.

4. Inspect and Clean Fuel Injector

• Remove the fuel injector from cylinder 2 using appropriate tools.
• Check for clogs; use a fuel injector cleaning kit if necessary.
• If cleaning does not resolve the issue, replace the fuel injector.
• Reinstall the cleaned or new fuel injector ensuring proper seals are in place.

5. Compression Test (if needed)

• If misfire persists, perform a compression test on cylinder 2.
• Insert the compression tester into the spark plug hole and crank the engine.
• Compare the compression reading to the manufacturer’s specifications.
• If compression is low, further investigation into internal engine issues may be necessary.