how to fix P0301 misfire code in Tesla Outback 5th Generation (2015-2019)

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool completely.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket, gap gauge.
• Remove the engine cover (if present).
• Remove the spark plug wire or ignition coil for cylinder 1.
• Use a socket to remove the old spark plug.
• Check the gap of the new spark plug with a gap gauge and adjust if necessary.
• Install the new spark plug and torque to the manufacturer's specifications (typically around 13-16 lb-ft).
• Reconnect the ignition coil or spark plug wire.

3. Inspect/Replace Ignition Coil

• Tools Required: Socket set, multimeter.
• Visually inspect the ignition coil for cracks or damage.
• Use a multimeter to test the coil’s primary and secondary resistance against specifications.
• If faulty, remove the old ignition coil by unbolting it and disconnecting the wiring harness.
• Install the new ignition coil and reconnect the wiring.

4. Check Fuel Injectors

• Tools Required: Fuel pressure gauge, injector cleaning kit (if necessary).
• Attach a fuel pressure gauge to the fuel rail to check for proper fuel pressure.
• If low, inspect the fuel pump and filter.
• If the injector is suspected to be clogged, use an injector cleaning kit to clean it or replace it if necessary.

5. Perform Compression Test

• Tools Required: Compression tester.
• Remove the spark plug for cylinder 1.
• Insert the compression tester into the spark plug hole.
• Crank the engine for several revolutions and record the reading.
• Compare to manufacturer specifications (about 150 psi for most engines).
• If low, further investigate potential causes like a blown head gasket or valve issues.