my Tesla Model 3 Highland (2024-present) shows P0171 code, what does it mean?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle's battery to prevent any electrical shorts.
• Allow the engine to cool down before starting the repair.

2. Inspect and Repair Air Intake

• Tools Required: Screwdriver set, pliers, flashlight
  • Visually inspect the air intake hoses and connections for leaks.
  • Tighten any loose clamps and replace damaged hoses or gaskets as necessary.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, soft cloth
  • Locate the MAF sensor in the air intake system.
  • Disconnect the electrical connector and remove the sensor from the intake.
  • Clean the MAF sensor using MAF cleaner. Do not touch the sensor element with fingers or tools.
  • Reinstall the sensor and reconnect the electrical connector.

4. Test Fuel Pressure

• Tools Required: Fuel pressure gauge
  • Locate the fuel rail and attach the fuel pressure gauge.
  • Turn the ignition on (do not start the engine) to check fuel pressure. Compare the reading against manufacturer specifications.
  • If pressure is low, inspect the fuel pump and filters for issues.

5. Inspect and Clean Fuel Injectors

• Tools Required: Fuel injector cleaning kit (if needed), socket set
  • Remove the fuel injectors from the fuel rail.
  • Inspect each injector for clogs or leaks and clean them using a fuel injector cleaning kit.
  • Reinstall the injectors and ensure proper seating and connections.