how to resolve the P0171 code for Tesla Model 3 Original (2017-2023)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to ensure safety.

2. Inspect and Repair Air Intake

• Sub-steps:
  1. Visually inspect all air intake hoses and clamps for cracks or disconnections.
  2. If any leaks are found, replace the damaged hoses or tighten the clamps as necessary.

3. Clean or Replace MAF Sensor

• Tools Required: MAF cleaner or isopropyl alcohol, soft brush.
• Sub-steps:
  1. Locate the MAF sensor in the air intake path.
  2. Disconnect the electrical connector and unscrew the sensor from the housing.
  3. Clean the sensor with MAF cleaner or isopropyl alcohol. Allow it to dry completely.
  4. Reinstall the MAF sensor and reconnect the electrical connector.

4. Check and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge.
• Sub-steps:
  1. Attach the fuel pressure gauge to the fuel rail's service port.
  2. Turn the ignition to the "On" position (do not start the engine) and check the fuel pressure reading against manufacturer specifications.
  3. If the pressure is too low, inspect the fuel pump, fuel filter, and fuel lines for blockages or failures.

5. Inspect and Clean Throttle Body

• Tools Required: Throttle body cleaner, soft cloth or brush.
• Sub-steps:
  1. Remove the intake duct connected to the throttle body.
  2. Inspect the throttle body for carbon buildup.
  3. Use throttle body cleaner and a cloth to clean the inside of the throttle body.
  4. Reassemble all components after cleaning.