how to fix P0301 misfire code on Tesla Outback 4th Generation (2010-2014)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is turned off.
• Disconnect the battery to prevent electrical shock.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 1:
  • Use a socket set to remove the bolts securing the ignition coil.
  • Disconnect the electrical connector carefully.
• Inspect the spark plug for wear or fouling:
  • Use a spark plug socket to remove the spark plug.
  • Check the gap and condition; replace if necessary.
• Install a new spark plug:
  • Torque the new spark plug to manufacturer specifications (typically 13-15 lb-ft).
• Reattach the ignition coil and reconnect the electrical connector.

3. Check and Replace Ignition Coil

• If the spark plug is in good condition, check the ignition coil functionality:
  • Use a multimeter to test the primary and secondary resistance of the coil.
• Replace the ignition coil if it fails the resistance test:
  • Install the new coil in the same position and secure it with the bolts.
  • Reconnect the electrical connector.

4. Fuel Injector Inspection

• Inspect the fuel injector for cylinder 1:
  • Remove the injector connector and the fuel rail (if necessary) to access the injector.
• Clean or replace the fuel injector if clogged:
  • Use injector cleaning fluid or replace with a new injector.
• Reinstall the injector and reconnect all connections.

5. Compression Test

• Perform a compression test on cylinder 1:
  • Remove the spark plug for cylinder 1.
  • Insert the compression gauge and crank the engine.
• Compare the reading with the manufacturer's specifications; replace piston rings or gaskets if compression is low.