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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the vehicle's battery to ensure safety while working on the electrical components.

2. Inspect and Repair Air Intake System

• Sub-steps:
  1. Visually inspect the air intake hoses for cracks or signs of wear.
  2. Tighten or replace any loose or damaged clamps.
  3. Use a smoke machine to test for vacuum leaks in the intake system if necessary.

3. Clean or Replace MAF Sensor

• Sub-steps:
  1. Remove the MAF sensor from the air intake duct using a screwdriver.
  2. Clean the MAF sensor with a specialized MAF cleaner; do not touch the sensing elements.
  3. Allow the sensor to dry completely before reinstalling it.

4. Check and Adjust Fuel Pressure

• Sub-steps:
  1. Attach a fuel pressure gauge to the fuel rail.
  2. Start the engine and observe the fuel pressure reading; it should be within manufacturer specifications.
  3. If pressure is low, inspect the fuel pump and fuel filter for issues.

5. Inspect Fuel Injectors

• Sub-steps:
  1. Remove the engine covers as necessary to access the fuel injectors.
  2. Check for any fuel leaks around the injectors.
  3. If necessary, replace faulty injectors and ensure they are properly seated.