how to fix P0174 code in Honda Accord 10th Generation (2018-2022)

Solution

1. Preparation

• Gather necessary tools and parts.
• Park the vehicle on a flat surface and engage the parking brake.
• Disconnect the negative battery terminal to ensure safety.

Tools Required:

• OBD-II scanner
• Fuel pressure gauge
• Multimeter
• Socket set
• Screwdriver set
• Cleaning solution for MAF sensor

2. Inspect and Repair Air Intake System

• Inspect Hoses:

  • Visually inspect all vacuum hoses for cracks or disconnections.
  • Replace any damaged hoses.

• Check Intake Manifold:

  • Remove the engine cover if necessary.
  • Inspect the intake manifold gaskets for any signs of wear; replace if necessary.

3. Clean or Replace MAF Sensor

• Remove MAF Sensor:

  • Disconnect the electrical connector and remove the MAF sensor from the air intake duct.

• Clean MAF Sensor:

  • Use a specialized MAF sensor cleaner and spray it onto the sensor elements; allow it to dry completely before reinstalling.

4. Check and Adjust Fuel Pressure

• Connect Fuel Pressure Gauge:

  • Locate the fuel rail service port, connect the gauge, and turn the ignition to the "ON" position without starting the engine.

• Check Pressure:

  • Verify that the fuel pressure matches the manufacturer's specifications. If low, inspect the fuel pump and filter for issues.

5. Inspect and Test Fuel Injectors

• Remove and Inspect Injectors:

  • Disconnect the fuel rail and remove the injectors for inspection.

• Clean or Replace Injectors:

  • If dirty, use a fuel injector cleaning solution; replace if they are clogged or damaged.

6. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0174 code and any other stored codes.