how to fix P0174 code in Volvo XC60 First Generation (2008-2017)

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.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers
• Remove the engine cover if applicable.
• Inspect the air intake hose for cracks or loose connections.
• Tighten or replace any damaged hoses.
• If leaks are found, replace the affected hose with a new one.

3. Examine and Clean MAF Sensor

• Tools Required: MAF cleaner, small screwdriver
• Disconnect the electrical connector from the MAF sensor.
• Remove the MAF sensor from the air intake duct.
• Spray MAF cleaner onto the sensor element and allow it to dry completely.
• Reinstall the MAF sensor and reconnect the electrical connector.

4. Check Vacuum Lines

• Tools Required: Visual inspection and/or smoke tester
• Visually inspect all vacuum lines for cracks or disconnections.
• If accessible, use a smoke tester to identify any hidden leaks.
• Replace any damaged vacuum lines.

5. Check Fuel Pressure

• Tools Required: Fuel pressure gauge
• Locate the fuel rail pressure test port.
• Connect the fuel pressure gauge to the test port.
• Turn the ignition on (do not start the engine) and check the pressure reading against the manufacturer’s specifications.
• If pressure is low, inspect the fuel pump and fuel filter.

6. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0174 code from the ECM.