how to fix P0171 code in Tesla Model S Original (2012-2020)

Learn how to diagnose and fix P0171 lean air-fuel mixture in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

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

2. Inspect and Repair Air Intake System

• Sub-steps:
  • Visually inspect the air intake hoses and connections for any visible cracks or leaks.
  • Tighten any loose clamps or fittings.
  • Replace any damaged hoses with new parts.
• Tools Required: Socket set, pliers

3. Clean or Replace MAF Sensor

• Sub-steps:
  • Locate the MAF sensor in the air intake path.
  • Disconnect the electrical connector and remove the sensor.
  • Clean the sensor using MAF cleaner spray, or replace it if necessary.
  • Reinstall the sensor and reconnect the electrical connector.
• Tools Required: Torx screwdriver, MAF cleaner spray

4. Check and Replace Fuel Filter (if applicable)

• Sub-steps:
  • Locate the fuel filter along the fuel line.
  • Relieve fuel system pressure before removal.
  • Disconnect the fuel lines and replace the fuel filter.
  • Reconnect the fuel lines and ensure there are no leaks.
• Tools Required: Fuel line disconnect tool, socket set

5. Inspect and Clean Throttle Body

• Sub-steps:
  • Locate the throttle body assembly.
  • Remove the air intake duct to access the throttle body.
  • Clean the throttle body with throttle body cleaner and a soft cloth.
  • Reassemble the intake duct and reconnect any electrical connectors.
• Tools Required: Throttle body cleaner, soft cloth, socket set