how to fix P0171 code in Honda Accord Eleventh Generation (2023-present)

Solution

1. Preparation

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

2. Inspect and Repair Air Intake System

• Sub-steps:
  • Visually inspect all air intake hoses for cracks, tears, or loose connections.
  • If leaks are found, replace the damaged hoses or tighten the connections.
  • Ensure the air filter is clean and replace it if necessary.

3. Clean or Replace MAF Sensor

• Tools Required: MAF cleaner, Torx screwdriver.
• Sub-steps:
  • Remove the MAF sensor from the air intake duct.
  • Spray the MAF cleaner onto the sensor elements and allow it to dry completely.
  • Reinstall the MAF sensor and secure it with the screws.

4. Check Fuel System

• Tools Required: Fuel pressure gauge.
• Sub-steps:
  • Connect the fuel pressure gauge to the fuel rail test port.
  • Turn the ignition to the "ON" position (do not start the engine) and check the fuel pressure reading against the manufacturer specifications.
  • If pressure is low, check fuel pump operation and replace if faulty.

5. Inspect Fuel Injectors

• Tools Required: Injector cleaning kit or replacement injectors.
• Sub-steps:
  • Remove the fuel rail to access the injectors.
  • Inspect for any leaks or clogs. Clean the injectors using an injector cleaning kit or replace them if necessary.
  • Reinstall the fuel rail and ensure all connections are secure.