how to fix a P0174 code in Honda Civic 10th Generation (2016-2021)

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before starting work.

2. Inspect and Repair the Air Intake System

• Tools Required: Screwdrivers, socket set, vacuum gauge
• Inspect the air intake hose and connections for cracks or looseness.
• Tighten any loose clamps and replace damaged hoses.
• Check the air filter and replace if clogged.

3. Clean or Replace MAF Sensor

• Tools Required: MAF cleaner, screwdriver
• Remove the MAF sensor from its housing.
• Spray the MAF cleaner onto the sensor element without touching it.
• Reinstall the sensor after ensuring it is dry.

4. Test and Replace Fuel System Components

• Tools Required: Fuel pressure gauge, socket set
• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition on (do not start) to check the fuel pressure; it should meet specifications (typically around 40-50 psi).
• If pressure is low, check the fuel pump and replace if necessary.
• If fuel injectors are clogged, consider cleaning or replacing them.

5. Inspect Vacuum Lines

• Tools Required: Visual inspection tools
• Conduct a thorough inspection of all vacuum lines.
• Replace any damaged or cracked lines to ensure proper vacuum levels.