how to fix P0174 code in my Volvo XC60 536 (2017-Present)

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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shock.
• Allow engine to cool before starting repairs.

2. Inspect and Repair the Air Intake System

• Sub-steps:
  1. Visually inspect all air intake hoses and connections for signs of damage or wear.
  2. If any hoses are cracked or disconnected, replace them with OEM parts.
  3. Ensure that the air filter is clean; replace if necessary.

3. Clean or Replace the Mass Air Flow (MAF) Sensor

• Tools Required: MAF cleaner, screwdriver
• Sub-steps:
  1. Locate the MAF sensor in the air intake duct.
  2. Disconnect the electrical connector and remove the sensor from the duct.
  3. Clean the sensor with MAF cleaner (do not touch the sensor element).
  4. Reinstall the sensor and reconnect the electrical connector.

4. Check and Repair Fuel Delivery

• Tools Required: Fuel pressure gauge
• Sub-steps:
  1. Connect the fuel pressure gauge to the fuel rail.
  2. Turn the ignition to the "ON" position without starting the engine and check the fuel pressure.
  3. If the pressure is below specifications, inspect the fuel pump and fuel filter and replace as necessary.

5. Inspect and Repair Exhaust System Leaks

• Sub-steps:
  1. Visually inspect the exhaust system for any visible cracks or holes, especially near the exhaust manifold and O2 sensors.
  2. Use a smoke machine if necessary to detect leaks.
  3. Repair or replace any damaged exhaust components.