how to fix P0302 code in Tesla Outback 4th Generation (2010-2014)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety.

2. Inspect and Replace Spark Plug

• Remove the engine cover (if applicable) using the socket set.
• Locate and remove the spark plug wire or ignition coil from cylinder #2.
  • Tools: Socket set, extension, and ratchet.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for signs of wear (carbon fouling, cracks).
• Replace with a new spark plug if necessary, ensuring proper gap according to manufacturer specifications (typically around 0.044 inches for Subaru).

3. Check and Replace Ignition Coil (if needed)

• If the spark plug is fine, inspect the ignition coil by testing with a multimeter for proper resistance (typically 0.5-0.7 ohms).
• If faulty, remove the ignition coil from cylinder #2.
• Install a new ignition coil by reversing the removal steps.

4. Inspect and Clean Fuel Injector

• Remove the fuel rail to access the injector for cylinder #2.
  • Tools: Fuel line disconnect tool, socket set.
• Inspect the fuel injector for clogs or damage.
• If necessary, replace the fuel injector.
• Reinstall the fuel rail and ensure all connections are secure.

5. Check Compression (if misfire persists)

• Remove the spark plug from cylinder #2 and install a compression gauge.
• Crank the engine to get a reading (should be within manufacturer specifications, typically 150-200 psi).
• If compression is low, further diagnosis is needed for potential issues like a blown head gasket or valve problems.