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

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to ensure safety.

Tools Required:

• OBD-II scanner
• Fuel pressure gauge
• Screwdrivers (flathead and Phillips)
• Socket set
• Torque wrench
• Cleaning solution (for MAF sensor)

2. Inspect and Repair Intake System

• Sub-steps:
  1. Visually inspect the air intake hoses for cracks or loose fittings. Replace any damaged hoses.
  2. Remove the air intake duct and check for obstructions.
  3. Clean the MAF sensor using a specific MAF sensor cleaner. Allow it to dry completely before reinstallation.
  4. Reinstall the air intake duct securely.

3. Check and Repair Fuel System

• Sub-steps:
  1. Connect the fuel pressure gauge to the fuel rail and turn the ignition on (do not start the engine).
  2. Verify that the fuel pressure is within manufacturer specifications (usually between 40-50 psi for Honda engines).
  3. If pressure is low, check the fuel pump and replace it if necessary.
  4. Inspect fuel injectors for clogs. Clean or replace them if required.

4. Inspect and Repair Vacuum Lines

• Sub-steps:
  1. Trace all vacuum lines from the intake manifold and inspect for cracks or disconnections.
  2. Replace any damaged vacuum hoses immediately.
  3. Use a smoke machine if available to detect hard-to-find leaks.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0174 code from the vehicle's computer.