how to troubleshoot a P0301 code in Tesla Outback 4th Generation (2010-2014)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to ensure safety.
• Allow the engine to cool before starting work.

2. Inspect and Replace Spark Plug

• Remove the ignition coil for cylinder 1:
  • Unplug the electrical connector.
  • Remove the mounting bolts using a socket set.
• Extract the spark plug using a spark plug socket.
• Inspect the spark plug for wear or fouling. Replace if damaged.
• Install a new spark plug, ensuring it is gapped correctly to manufacturer specifications.
• Reinstall the ignition coil, securing it with bolts and reconnecting the electrical connector.

3. Check and Replace Ignition Coil (if necessary)

• If the spark plug is fine, proceed to inspect the ignition coil:
  • Use a multimeter to check the coil's primary and secondary resistance according to specifications.
• If the ignition coil is faulty, replace it with a new one.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Inspect Fuel Injector (if necessary)

• If the ignition components are functioning correctly, check the fuel injector for cylinder 1:
  • Disconnect the fuel line and electrical connector.
  • Use a fuel injector tester to ensure proper function.
• Replace the fuel injector if it is not working correctly.
• Reconnect the fuel line and electrical connector.

5. Reassemble and Clean

• Reassemble any components that were removed for access.
• Clear the codes with an OBD-II scanner.
• Reconnect the negative battery terminal.