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

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

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the battery to ensure safety while working on the vehicle.

2. Inspect and Repair Air Intake System

• Tools Required: Torque wrench, socket set, screwdriver set.
• Sub-steps:
  1. Remove the engine cover if equipped.
  2. Inspect the air intake duct, hoses, and connections for any cracks or leaks.
  3. Tighten any loose connections and replace damaged hoses or ducts as necessary.

3. Check and Clean MAF Sensor

• Tools Required: MAF sensor cleaner.
• Sub-steps:
  1. Disconnect the electrical connector from the MAF sensor.
  2. Remove the MAF sensor from the air intake housing using appropriate tools.
  3. Spray MAF sensor cleaner on the sensor element and let it dry completely.
  4. Reinstall the MAF sensor and reconnect the electrical connector.

4. Fuel System Inspection

• Tools Required: Fuel pressure gauge, socket set.
• Sub-steps:
  1. Locate the fuel rail and connect the fuel pressure gauge.
  2. Turn the ignition key to the "On" position (do not start the engine) to check fuel pressure.
  3. If pressure is below specifications, inspect the fuel pump, filter, and lines for issues.
  4. Replace any faulty components as needed.

5. Vacuum Leak Inspection

• Tools Required: Smoke machine (optional), vacuum gauge.
• Sub-steps:
  1. Inspect all vacuum lines and hoses under the hood for wear and tear.
  2. If available, use a smoke machine to detect vacuum leaks in the intake system.
  3. Replace any leaking hoses or components.

6. Reassemble and Test

• Reinstall any components removed during inspection.
• Reconnect the battery.