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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before starting work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil by unbolting it and disconnecting the electrical connector.
• Remove the spark plug using a socket wrench.
• Inspect the spark plug for wear or damage; replace if necessary (gapping to manufacturer's specifications).
• Reinstall the spark plug and torque to manufacturer specifications (typically around 13-15 ft-lbs).

3. Check and Replace Ignition Coil

• If the spark plug appears fine, test the ignition coil’s resistance with a multimeter.
• If out of specification, replace the ignition coil for cylinder 1.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Inspect and Replace Fuel Injector

• Disconnect the fuel injector connector and remove the fuel line carefully (use safety glasses).
• Remove the fuel injector and inspect it for blockage or damage.
• Replace the fuel injector if necessary.
• Reinstall the fuel injector and reconnect the fuel line and electrical connector.

5. Compression Test (if required)

• Remove the spark plug from cylinder 1.
• Insert a compression gauge and crank the engine a few times.
• Record the compression reading; it should be within the manufacturer's specified range (typically around 140-200 psi).
• If compression is low, further inspection of valves and piston rings may be needed.

6. Reassemble and Clean Up

• Reinstall any components removed during the procedure.
• Reconnect the negative battery terminal.
• Clear the P0301 code using an OBD-II scanner.