how to fix P0171 code on Tesla Outback 5th Generation (2015-2019)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Repair Air Intake System

• Tools Required: Screwdriver set, flashlight
• Inspect the air intake duct and connections for any signs of wear or damage.
• Tighten any loose clamps or replace damaged hoses as needed.

3. Clean or Replace the MAF Sensor

• Tools Required: MAF sensor cleaner, Torx screwdriver or socket set
• Remove the MAF sensor from the air intake system.
• Clean the sensor using an appropriate MAF cleaner and allow it to dry.
• Reinstall the MAF sensor securely.

4. Check and Repair Fuel System

• Tools Required: Fuel pressure gauge, socket set
• Connect a fuel pressure gauge to the fuel rail to ensure the pressure is within specified limits.
• If pressure is low, check the fuel filter for clogs and replace it if necessary.
• Inspect the fuel pump and replace if it is not functioning properly.

5. Inspect Vacuum Hoses

• Tools Required: Visual inspection tools
• Visually inspect all vacuum hoses for cracks, leaks, or disconnections.
• Replace or repair any damaged hoses.

6. Examine Exhaust System

• Tools Required: Visual inspection tools, jack stands (if needed)
• Inspect the exhaust system for leaks, especially near the manifold and catalytic converter.
• Repair or replace any leaking components.