how to fix P0174 code in Genesis G70 IG (2017-2023)?

Learn how to diagnose and fix P0174 fuel system issue in Genesis G70 IG (2017-2023). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool completely.

2. Inspect and Repair Air Intake System

• Sub-steps:
  1. Visually inspect the intake manifold and hoses for any visible damage.
  2. Tighten any loose clamps and replace any damaged hoses.
  3. Replace the air filter if it is dirty or clogged.
• Tools Required: Socket set, screwdrivers.

3. Clean or Replace the MAF Sensor

• Sub-steps:
  1. Remove the MAF sensor connector by pressing the release tab.
  2. Unscrew the MAF sensor from the air intake duct.
  3. Clean the MAF sensor using MAF cleaner spray; do not touch the sensor element.
  4. If cleaning does not resolve the issue, replace the MAF sensor with a new one.
• Tools Required: Torx screwdriver, MAF cleaner spray.

4. Test and Repair Fuel System

• Sub-steps:
  1. Connect a fuel pressure gauge to the fuel rail to check pressure levels.
  2. If pressure is low, check the fuel pump and replace if necessary.
  3. Inspect and clean the fuel injectors using a fuel injector cleaner kit or replace them if faulty.
• Tools Required: Fuel pressure gauge, fuel injector cleaning kit.

5. Inspect Vacuum Lines

• Sub-steps:
  1. Trace all vacuum lines from the intake manifold to the various components.
  2. Replace any lines that are cracked or disconnected.
  3. Use a smoke machine to find any hidden vacuum leaks if necessary.
• Tools Required: Smoke machine, hose clamp pliers.