how to solve P0171 lean condition code in my Volvo XC60 First Generation (2008-2017)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect Air Intake System

• Remove the air filter and inspect for clogging; replace if necessary.
• Check the air intake duct for cracks or loose fittings and replace any damaged sections.

3. Clean MAF Sensor

• Carefully remove the MAF sensor from the intake tubing.
• Use MAF sensor cleaner to spray and clean the sensor element; allow it to dry completely before reinstallation.

4. Check and Repair Vacuum Leaks

• Visually inspect all vacuum hoses for cracks or disconnections.
• Replace any damaged hoses. If necessary, use a smoke machine to detect hard-to-find leaks.

5. Inspect Fuel Pressure

• Connect a fuel pressure gauge to the fuel rail.
• Turn the ignition to the "ON" position (without starting) and check the pressure reading against manufacturer specifications (usually around 50-60 psi).
• If pressure is low, inspect the fuel pump and filter for issues, replacing them as needed.

6. Check Fuel Injectors

• Remove the fuel injectors and inspect them for clogs or damage.
• Clean the injectors using a professional injector cleaning kit if necessary, or replace them if found defective.