how to fix P0174 code in Honda Civic 9th Generation (2012-2015)

Solution

1. Preparation

• Gather required tools and parts.
• Disconnect the negative battery terminal to prevent any electrical issues while working.

2. Inspect and Repair Intake System

• Sub-steps:
  1. Visually inspect all air intake hoses and connections for cracks or disconnections.
  2. Tighten any loose clamps or replace damaged hoses.
  3. Replace any damaged gaskets between the intake manifold and engine.

3. Clean MAF Sensor

• Sub-steps:
  1. Remove the MAF sensor from the air intake duct.
  2. Use MAF cleaner spray to clean the sensor elements. Allow it to dry completely before reinstallation.
  3. Reinstall the MAF sensor, ensuring it is properly seated and connected.

4. Check and Replace Fuel Filter

• Sub-steps:
  1. Locate and remove the fuel filter from the fuel line.
  2. Install a new fuel filter, ensuring to tighten connections securely.
  3. Reconnect the fuel lines and check for leaks.

5. Test Fuel Injectors

• Sub-steps:
  1. Use a multimeter to check the resistance of each injector. Replace any injector that is out of specification.
  2. Use a fuel injector cleaner to clean clogged injectors if necessary.

6. Reconnect Battery and Clear Codes

• Sub-steps:
  1. Reconnect the negative battery terminal.
  2. Use an OBD-II scanner to clear the P0174 code from the ECU.