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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers.
• Sub-steps:
  1. Visually inspect all air intake hoses and connections for cracks or disconnections.
  2. Tighten or replace any loose or damaged hoses.
  3. Reconnect the intake system securely.

3. Clean or Replace MAF Sensor

• Tools Required: MAF cleaner, soft cloth.
• Sub-steps:
  1. Locate the MAF sensor in the air intake duct.
  2. Remove the sensor carefully from its housing.
  3. Spray MAF cleaner onto the sensor elements and allow it to dry completely.
  4. Reinstall the sensor ensuring it is securely fastened.

4. Check and Repair Fuel System

• Tools Required: Fuel pressure gauge, socket set.
• Sub-steps:
  1. Connect the fuel pressure gauge to the fuel rail.
  2. Turn the ignition to the ON position (do not start) to check the fuel pressure.
  3. Compare the reading with manufacturer specifications (typically around 40-50 psi).
  4. If the pressure is low, inspect the fuel pump and filter for issues and replace if necessary.

5. Inspect and Clean Fuel Injectors

• Tools Required: Fuel injector cleaning kit, socket set.
• Sub-steps:
  1. Remove the fuel rail to access the fuel injectors.
  2. Inspect the injectors for clogs or leaks.
  3. Use a fuel injector cleaning kit to clean the injectors or replace them if they are faulty.
  4. Reassemble the fuel rail ensuring all connections are tight.

6. Reconnect Battery

• Reconnect the negative battery terminal securely.