what does code P0171 mean for my Tesla Outback 6th Generation (2020-2024)?

Solution

1. Preparation

• Gather tools and parts required for repairs.
• Disconnect the negative battery terminal to ensure safety.
• Allow the engine to cool before starting work.

2. Inspect and Repair Vacuum Leaks

• Tools Required: Torque wrench, vacuum gauge
• Inspect all vacuum lines connected to the intake manifold for cracks or disconnections.
• Tighten any loose clamps or replace damaged hoses.
• Use a vacuum gauge to test for leaks in the intake manifold, if necessary.

3. Clean or Replace MAF Sensor

• Tools Required: MAF cleaner, screwdriver
• Remove the MAF sensor from the air intake duct.
• Clean the sensor with MAF cleaner and allow it to dry completely before reinstalling.
• If cleaning does not resolve the issue, replace the MAF sensor.

4. Check Fuel Delivery System

• Tools Required: Fuel pressure gauge
• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition to the "ON" position (without starting the engine) and check the fuel pressure reading.
• If the pressure is below specifications, inspect the fuel pump and fuel filter for clogs or failures.

5. Inspect Oxygen Sensors

• Tools Required: O2 sensor socket, multimeter
• Locate the upstream and downstream oxygen sensors.
• Check the wiring and connectors for damage.
• Test the sensors using a multimeter to ensure they are functioning within specifications. Replace if necessary.