how to fix P0171 code in Tesla Outback 5th Generation (2015-2019)

Solution

1. Preparation

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

2. Inspect and Repair Air Intake System

• Sub-steps:
  1. Visually inspect the air intake hoses for cracks or loose connections.
  2. Tighten any loose clamps and replace damaged hoses.
  3. Check the air filter and replace if dirty.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner
• Sub-steps:
  1. Disconnect the MAF sensor electrical connector.
  2. Remove the MAF sensor from the air intake tube.
  3. Spray the MAF sensor with MAF cleaner and allow it to dry.
  4. Reinstall the MAF sensor and reconnect the electrical connector.

4. Check Fuel Pressure

• Tools Required: Fuel pressure gauge
• Sub-steps:
  1. Locate the fuel pressure test port on the fuel rail.
  2. Connect the fuel pressure gauge to the test port.
  3. Turn the ignition to the "ON" position (do not start the engine) and check the pressure reading.
  4. If pressure is below specifications, consider replacing the fuel pump or fuel filter.

5. Inspect Fuel Injectors

• Sub-steps:
  1. Remove the engine cover to access the fuel injectors.
  2. Check for signs of fuel leakage around the injectors.
  3. If injectors are clogged, consider using a fuel injector cleaner or replacing them.