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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle's battery to prevent any electrical shorts.
• Ensure the engine is cool before beginning work.

2. Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil from cylinder 1 by disconnecting the electrical connector and unscrewing the mounting bolt.
• Carefully extract the spark plug using a spark plug socket.
• Inspect the old spark plug for wear. If it shows signs of excessive wear, carbon buildup, or damage, replace it with a new spark plug.
• Install the new spark plug and torque it to the manufacturer’s specification (typically around 13-16 lb-ft).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Test Ignition Coil

• Tools Required: Multimeter.
• Disconnect the ignition coil from the electrical connector again.
• Measure the primary and secondary resistance of the ignition coil with a multimeter. Compare the readings with the manufacturer's specifications.
• If the resistance is outside the specified range, replace the ignition coil with a new one.

4. Inspect Fuel Injector

• Tools Required: Noid light or oscilloscope.
• Disconnect the fuel injector connector for cylinder 1.
• Connect the noid light to the injector harness to check for a pulse while cranking the engine.
• If no pulse is detected, further investigate the wiring or ECM (Engine Control Module).
• If the injector is faulty, replace it with a new injector.

5. Conduct Compression Test

• Tools Required: Compression tester.
• Remove the spark plug for cylinder 1.
• Screw the compression tester into the spark plug hole.
• Crank the engine and note the compression reading. It should be within the manufacturer's specified range.
• If the compression is low, further investigation into the piston rings, valves, or head gasket may be necessary.