how to fix P0171 lean code in Tesla Outback 6th Generation (2020-2024)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Repair Air Intake System

• Sub-steps:

  1. Visually inspect all air intake hoses for cracks or disconnections.
  2. Replace any damaged hoses or clamps.
  3. Reattach all connections securely.

• Tools Required:

  • Socket set
  • Screwdrivers

3. Clean or Replace MAF Sensor

• Sub-steps:

  1. Locate the MAF sensor in the air intake duct.
  2. Disconnect the electrical connector.
  3. Remove the MAF sensor using a socket wrench.
  4. Clean the sensor with MAF cleaner or replace it if damaged.
  5. Reinstall the sensor and reconnect the electrical connector.

• Tools Required:

  • Socket set
  • MAF cleaner

4. Test and Repair Fuel System

• Sub-steps:

  1. Connect a fuel pressure gauge to the fuel rail.
  2. Turn the ignition to the "ON" position (do not start) and check the fuel pressure.
  3. If pressure is low, inspect the fuel pump and fuel filter for faults.
  4. Replace the fuel filter if clogged and ensure the fuel pump is functioning properly.

• Tools Required:

  • Fuel pressure gauge
  • Socket set

5. Check and Clean Fuel Injectors

• Sub-steps:

  1. Remove the fuel rail to access the injectors.
  2. Inspect each injector for clogs and clean using an injector cleaning kit.
  3. Reinstall the fuel rail and ensure all connections are tight.

• Tools Required:

  • Socket set
  • Injector cleaning kit