how to fix P0171 code in Volvo XC60 Second Generation (2018-2024)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety.
• Allow the engine to cool down before beginning work.

2. Inspect and Repair Air Intake System

• Tools Required: Vacuum gauge, socket set, screwdrivers
• Inspect all hoses and connections in the air intake system for signs of wear, cracks, or disconnections.
• Use a vacuum gauge to check for leaks; repair or replace any damaged components.

3. Clean or Replace MAF Sensor

• Tools Required: MAF cleaner, torx screwdriver
• Remove the MAF sensor from the intake duct.
• Spray the MAF sensor with MAF cleaner; do not touch the sensor elements.
• Reinstall the sensor securely.

4. Check and Repair Fuel System

• Tools Required: Fuel pressure gauge, fuel line disconnect tool
• Connect the fuel pressure gauge to the fuel rail to check for proper fuel pressure (refer to manufacturer specifications).
• If pressure is low, inspect the fuel pump and fuel filter for clogs or failures and replace them if necessary.

5. Inspect Fuel Injectors

• Tools Required: Fuel injector cleaner kit, multimeter
• Test the fuel injectors for proper function using a multimeter.
• If faulty, remove and clean or replace the injectors as needed.

6. Verify Oxygen Sensor Functionality

• Tools Required: OBD-II scanner, multimeter
• Use the OBD-II scanner to monitor the oxygen sensor readings while the engine is running.
• Replace any faulty oxygen sensors as necessary based on the readings.