my Tesla Model S Original (2012-2020) shows P0171 lean condition how to fix

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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle’s battery to prevent electrical shock.

2. Inspect and Repair Vacuum Leaks

• Sub-steps:
  1. Visually inspect all vacuum hoses for cracks or disconnections.
  2. Use a smoke machine to identify hidden leaks if necessary.
  3. Replace any damaged hoses or gaskets.
• Tools Required: Smoke machine, basic hand tools.

3. Clean or Replace the MAF Sensor

• Sub-steps:
  1. Locate the MAF sensor in the air intake duct.
  2. Disconnect the electrical connector and remove the MAF sensor.
  3. Clean the sensor with MAF cleaner or replace it if damaged.
  4. Reinstall the MAF sensor and reconnect the electrical connector.
• Tools Required: Screwdriver set, MAF cleaner.

4. Check Fuel Pressure

• Sub-steps:
  1. Connect a fuel pressure gauge to the fuel rail.
  2. Turn the ignition to the "ON" position without starting the engine to check pressure.
  3. Compare the reading to the manufacturer’s specifications (typically around 50-60 psi).
  4. If pressure is low, inspect the fuel pump and filter for issues.
• Tools Required: Fuel pressure gauge.

5. Inspect Fuel Injectors

• Sub-steps:
  1. Remove the fuel rail to access the injectors.
  2. Check for clogs or leaks in the injectors.
  3. Clean or replace injectors as necessary.
  4. Reinstall the fuel rail and ensure all connections are secure.
• Tools Required: Injector cleaning kit, basic hand tools.