what does the P0171 code indicate for my Volvo XC60 Second Generation (2018-2024)

Solution

1. Preparation

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

2. Inspect and Repair Air Intake System

• Inspect Hoses and Gaskets
  • Visually inspect all air intake hoses for cracks or disconnections.
  • Check the intake manifold gasket for signs of wear or leaks.
• Repair or Replace
  • Replace any damaged hoses or gaskets with new OEM parts.

3. Clean or Replace MAF Sensor

• Remove MAF Sensor
  • Unplug the electrical connector from the MAF sensor.
  • Use a Torx screwdriver to remove the MAF sensor from the air intake duct.
• Clean MAF Sensor
  • Use MAF sensor cleaner and a soft brush to gently clean the sensor.
• Reinstall or Replace
  • If cleaning does not resolve issues, replace the MAF sensor with a new one.

4. Inspect Fuel System

• Check Fuel Pressure
  • Connect a fuel pressure gauge to the fuel rail and turn the ignition to the ON position without starting the engine.
  • Verify that the pressure meets manufacturer specifications (usually around 50-60 PSI).
• Replace Fuel Filter
  • If fuel pressure is low, consider replacing the fuel filter.

5. Check Fuel Injectors

• Inspect Fuel Injectors
  • Remove the engine cover to access the fuel injectors.
  • Inspect for any signs of leaks or clogging.
• Clean or Replace
  • Clean injectors with a fuel injector cleaning kit or replace them if faulty.