how to fix P0302 misfire code on my Tesla Outback 4th Generation (2010-2014)

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the battery to prevent electrical shorts.
• Allow the engine to cool down before starting repairs.

2. Replace Spark Plug

• Remove the ignition coil from cylinder 2.
  • Tools Required: Socket set, ratchet
• Remove the spark plug using a spark plug socket.
  • Inspect the old spark plug for wear, carbon build-up, or damage.
• Install a new spark plug, ensuring it is gapped correctly (typically 0.044 inches for the Outback).
• Torque the spark plug to the manufacturer’s specifications (about 15-20 ft-lbs).

3. Replace Ignition Coil

• If the ignition coil is faulty, remove it from cylinder 2.
  • Disconnect the electrical connector first.
• Install the new ignition coil and reconnect the electrical connector.
• Ensure that the coil is seated properly.

4. Inspect and Replace Fuel Injector (if necessary)

• If the fuel injector is suspected to be faulty, remove the intake manifold to access it.
  • Tools Required: Torque wrench, various socket sizes
• Disconnect the fuel line and electrical connector from the injector.
• Remove the old injector and install the new one, ensuring proper sealing.
• Reassemble the intake manifold and torque it to manufacturer specifications.

5. Clear Codes & Test Drive

• Reconnect the battery and clear the error codes using the OBD-II scanner.
• Start the engine and monitor for any misfire symptoms.
• Perform a test drive to ensure the issue is resolved.