how to fix P0174 code in Volkswagen Golf Eighth Generation (2020-present)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety.
• Allow the engine to cool down before working on any components.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdriver set, vacuum gauge
• Remove the engine cover if applicable.
• Inspect the air intake hose for any cracks or loose connections.
• Tighten or replace any loose or damaged components.
• Check and clean the MAF sensor using MAF cleaner.

3. Check and Replace Fuel Filter (if necessary)

• Tools Required: Fuel line disconnect tool, wrench set, safety glasses
• Relieve the fuel system pressure by removing the fuel pump relay and starting the engine until it stalls.
• Disconnect the negative battery terminal.
• Use the fuel line disconnect tool to remove the fuel lines from the filter.
• Replace the fuel filter with a new one, ensuring correct orientation.
• Reconnect the fuel lines and battery terminals.

4. Test and Replace Fuel Injectors (if necessary)

• Tools Required: Multimeter, fuel injector cleaning kit
• Use a multimeter to check for proper electrical resistance in the fuel injectors.
• If an injector is faulty, remove it by disconnecting the wiring harness and unscrewing it from the rail.
• Replace it with a new injector.
• Use a fuel injector cleaning kit to clean the remaining injectors if needed.

5. Final Assembly and Testing

• Reassemble any components removed during the repair.
• Reconnect the battery and start the engine.
• Allow the engine to reach operating temperature and monitor for any leaks or abnormalities.