how to fix P0171 lean code in Tesla Outback 4th Generation (2010-2014)

Solution

1. Preparation

• Gather all required tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal.

2. Inspect and Repair Air Intake System

• Sub-steps:

  1. Visually inspect all air intake hoses for cracks or loose connections.
  2. Tighten any loose clamps and replace any damaged hoses.
  3. Clean the MAF sensor using MAF cleaner; do not touch the sensor element.

• Tools Required: Screwdriver set, MAF cleaner, inspection mirror.

3. Check and Replace Fuel Filter

• Sub-steps:

  1. Locate the fuel filter and relieve fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls.
  2. Disconnect the fuel lines from the filter using line wrenches.
  3. Replace the old filter with a new one, ensuring proper orientation.
  4. Reconnect the fuel lines and install the fuse back into the fuel pump.

• Tools Required: Line wrenches, replacement fuel filter.

4. Test and Clean Fuel Injectors

• Sub-steps:

  1. Remove the fuel injectors from the fuel rail.
  2. Use an injector cleaning kit to clean each injector; follow kit instructions carefully.
  3. Reinstall the cleaned injectors and ensure they are seated properly.

• Tools Required: Injector cleaning kit, O-ring lubricant.

5. Reconnect Battery and Clear Codes

• Sub-steps:

  1. Reconnect the negative battery terminal.
  2. Use the OBD-II scanner to clear the P0171 code.

• Tools Required: OBD-II scanner.