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

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

Solution

1. Preparation

• Gather the necessary tools and parts.
• Disconnect the vehicle battery to ensure safety.
• Allow the engine to cool down to prevent burns.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers, vacuum gauge, hose clamps
• Inspect all air intake hoses for cracks or loose connections. Replace any damaged hoses.
• Tighten all hose clamps to ensure a secure fit.
• If any leaks are found, replace the affected components.

3. Clean MAF Sensor

• Tools Required: MAF sensor cleaner
• Remove the MAF sensor from the air intake duct.
• Spray the MAF sensor with MAF cleaner and allow it to dry completely before reinstallation.

4. Check Fuel Pressure

• Tools Required: Fuel pressure gauge
• Connect the fuel pressure gauge to the fuel rail test port.
• Turn the ignition to the "ON" position without starting the engine to check the pressure. It should match the specifications in the service manual.
• If the pressure is low, inspect the fuel pump and filter for issues.

5. Inspect Fuel Injectors

• Tools Required: Fuel injector cleaner
• Remove the fuel injectors from the engine.
• Clean the injectors using a fuel injector cleaning kit or replace them if they are clogged or damaged.

6. Reassemble and Reconnect

• Reinstall all components in reverse order of removal.
• Reconnect the battery and clear the error codes using the OBD-II scanner.