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

Learn how to diagnose and fix P0174 engine too 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 battery negative terminal.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, pliers, vacuum gauge
• Inspect all hoses and connections in the air intake system.
  • Tighten any loose clamps and replace cracked hoses.
  • If any damaged components are found, replace them with OEM parts.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner
• Disconnect the MAF sensor electrical connector.
• Remove the MAF sensor from the intake.
• Clean the sensor using a MAF sensor cleaner. Allow it to dry completely before reinstallation.
• If cleaning does not resolve issues, replace the MAF sensor with a new, OEM part.

4. Check and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge
• Connect the fuel pressure gauge to the fuel rail.
• Start the engine and check the fuel pressure. Compare the reading against the manufacturer's specifications.
• If the pressure is low, inspect the fuel pump and filter for proper operation and replace as necessary.

5. Inspect and Test Fuel Injectors

• Tools Required: Multimeter, injector cleaning kit
• Disconnect the electrical connectors from the fuel injectors.
• Use a multimeter to check the resistance of each injector. If out of spec, replace the injector.
• If the injectors are clogged, use an injector cleaning kit to flush them.

6. Reconnect Battery and Clear Codes

• Reconnect the battery terminal after repairs.
• Use the OBD-II scanner to clear the P0174 code from the system.