how to fix P0171 code in Genesis G70 IG (2017-2023)?

Solution

1. Preparation

• Gather tools and parts required.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers, vacuum gauge.
• Inspect the entire air intake system for any leaks or damage.
• Tighten or replace any loose or damaged clamps and hoses.
• If cracks are found, replace the intake duct or hoses as necessary.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner or isopropyl alcohol, soft cloth.
• Disconnect the MAF sensor electrical connector.
• Remove the MAF sensor from the air intake assembly.
• Clean the sensor using MAF sensor cleaner and allow it to dry completely.
• Reinstall the MAF sensor and reconnect the electrical connector.

4. Check Fuel Pressure

• Tools Required: Fuel pressure gauge.
• Locate the fuel pressure test port on the fuel rail.
• Connect the fuel pressure gauge to the test port.
• Turn the ignition to the "ON" position (do not start the engine) and check the fuel pressure reading. It should match the manufacturer's specifications.
• If the pressure is low, consider replacing the fuel pump or fuel filter.

5. Inspect Fuel Injectors

• Tools Required: Fuel injector cleaning kit or replacement injectors.
• If fuel pressure is adequate, check fuel injectors for clogs or leaks.
• Use a fuel injector cleaner to clean them if necessary, or replace them if they are faulty.

6. Reassemble and Test

• Reassemble any components that were removed during inspection and repair.
• Reconnect the battery.
• Clear the P0171 code using the OBD-II scanner and perform a test drive to ensure the issue is resolved.