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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the negative battery terminal for safety.

2. Inspect and Replace Ignition Components

• Tools Required: Socket set, torque wrench, torque specifications manual, dielectric grease.
• Remove the engine cover (if applicable) by unscrewing bolts.
• Disconnect the electrical connector from the ignition coil for cylinder 1.
• Unscrew the ignition coil from the cylinder head and remove it.
• Remove the spark plug from cylinder 1 using a spark plug socket.
• Inspect the spark plug for wear, carbon buildup, or damage. Replace if necessary.
• Install the new spark plug and torque to manufacturer specifications (typically around 13-16 ft-lbs).
• Apply dielectric grease to the ignition coil terminal and reinstall the ignition coil.
• Reconnect the electrical connector and secure the engine cover.

3. Check Fuel Injector

• Tools Required: Multimeter or noid light.
• Locate the fuel injector connector for cylinder 1.
• Use a multimeter to check for voltage at the connector with the ignition on (should be around 12V).
• If voltage is present, connect a noid light to verify injector pulse while cranking the engine.
• If the injector is not functioning, replace it.

4. Perform Compression Test

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 1.
• Insert the compression tester into the spark plug hole.
• Crank the engine for a few seconds to get a reading.
• Compare the compression reading to manufacturer specifications (should be around 150-200 psi).
• If the compression is low, inspect for valve issues, head gasket failure, or piston problems.