how to fix P0174 code in Volvo XC60 Second Generation (2018-2024)

Learn how to diagnose and fix P0174 engine lean condition in Volvo XC60 (2018-2024). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to prevent electrical shorts.
• Ensure the vehicle is on a level surface and secure with wheel chocks.

2. Inspect for Vacuum Leaks

• Sub-steps:
  • Visually inspect all vacuum hoses connected to the intake manifold for cracks or disconnections.
  • Use a smoke machine to identify any hidden leaks.
  • Replace any damaged hoses or gaskets.

3. Clean the Mass Air Flow Sensor

• Tools Required: MAF cleaner, Torx screwdriver
• Sub-steps:
  • Locate the MAF sensor in the air intake duct.
  • Remove the sensor with the Torx screwdriver.
  • Spray the MAF cleaner on the sensor element and let it dry completely before reinstalling.

4. Check Fuel System

• Sub-steps:
  • Connect a fuel pressure gauge to the fuel rail.
  • Turn the ignition to the "ON" position and check the fuel pressure against manufacturer specifications.
  • If pressure is low, inspect the fuel pump, filter, and fuel injectors for blockages or failures.

5. Inspect Oxygen Sensors

• Sub-steps:
  • Use a multimeter to test the oxygen sensor's voltage and ensure it is within the manufacturer's specified range.
  • If the sensor is out of range, replace it with a new one.

6. Reassemble and Clear Codes

• Reinstall any components that were removed during the inspection.
• Reconnect the battery and use the OBD-II scanner to clear the P0174 code.