how to fix P0174 code in Volkswagen Golf Seventh Generation (2013-2020)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the battery to prevent electrical shorts.
• Allow the engine to cool before starting work.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers, vacuum gauge.
• Check the intake manifold gasket for signs of wear or damage.
• Tighten any loose clamps or screws on the intake hose.
• If leaks are detected, replace the faulty components (e.g., hoses or gaskets).

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, Torx screwdrivers.
• Remove the MAF sensor from the intake system.
• Spray MAF sensor cleaner onto the sensor element; do not touch it with fingers.
• Allow it to dry completely before reinstalling. If damaged, replace the MAF sensor.

4. Verify Fuel Pressure

• Tools Required: Fuel pressure gauge.
• Connect the fuel pressure gauge to the fuel rail.
• Start the engine and check the fuel pressure against manufacturer specifications (typically around 50-60 psi).
• If pressure is low, check the fuel pump and fuel filter. Replace if necessary.

5. Inspect and Test Fuel Injectors

• Tools Required: Multimeter, fuel injector cleaner.
• Disconnect the fuel injector connectors.
• Use a multimeter to check for proper resistance according to specifications.
• Use a fuel injector cleaner to clean the injectors if they are clogged, or replace them if they fail the test.