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

Solution

1. Preparation

• Gather tools and workspace: Ensure the vehicle is parked on a flat surface, engine cool, and battery disconnected.
• Tools required: OBD-II scanner, socket set, torque wrench, multimeter, compression tester, and a vacuum gauge.

2. Replace Spark Plug

• Remove the engine cover if applicable.
• Disconnect the ignition coil connector for cylinder 1.
• Remove the ignition coil bolts and carefully pull the ignition coil out.
• Remove the spark plug using a socket wrench.
• Inspect the spark plug for wear; replace if necessary.
• Install a new spark plug, torque to manufacturer specifications (typically around 13 lb-ft).
• Reinstall the ignition coil and connector.

3. Replace Ignition Coil (if necessary)

• If the ignition coil was found to be faulty during inspection, replace it.
• Remove the faulty ignition coil and install a new one, ensuring it is seated correctly.
• Reconnect the electrical connector.

4. Test Fuel Injector

• If the spark plug and ignition coil are functioning, check the fuel injector.
• Disconnect the fuel injector connector for cylinder 1.
• Use a multimeter to test for voltage while cranking the engine; replace the injector if it does not receive proper voltage.
• If needed, replace the fuel injector with a new unit.

5. Compression Test

• If misfire persists, perform a compression test on cylinder 1.
• If compression is low, further investigation into engine internals (valves, piston rings) may be necessary.