how to fix the P0171 code on my Genesis G70 IG (2017-2023)?

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to ensure safety.
• Ensure the engine is cool before starting work.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers
• Instructions:
  1. Remove the air intake duct from the throttle body.
  2. Inspect all hoses and connections for cracks or looseness.
  3. Replace any damaged hoses or gaskets.
  4. Reassemble the air intake duct securely.

3. Clean or Replace MAF Sensor

• Tools Required: MAF cleaner, Torx screwdriver
• Instructions:
  1. Locate the MAF sensor in the air intake system.
  2. Disconnect the electrical connector.
  3. Remove the MAF sensor using a Torx screwdriver.
  4. Clean the sensor with MAF cleaner or replace with a new unit.
  5. Reinstall the MAF sensor and reconnect the electrical connector.

4. Check Fuel System Pressure

• Tools Required: Fuel pressure gauge
• Instructions:
  1. Locate the fuel pressure test port on the rail.
  2. Connect the fuel pressure gauge and turn the ignition to the ON position (do not start the engine).
  3. Check the pressure reading against manufacturer specifications (typically around 50-60 PSI).
  4. If pressure is low, inspect the fuel pump and filter for issues.

5. Inspect Fuel Injectors

• Tools Required: Multimeter, injector cleaner
• Instructions:
  1. Disconnect the fuel injector electrical connectors.
  2. Use a multimeter to check for proper resistance across each injector.
  3. Clean the injectors using a fuel injector cleaning kit if they are clogged or replace them if faulty.