what does it mean if my Honda Accord Eleventh Generation (2023-present) has a P0171 code?

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to ensure safety while working with electrical components.

2. Inspect and Repair Intake System

• Sub-steps:
  1. Visually inspect the air intake ducting for cracks or loose connections.
  2. Use a smoke machine or carb cleaner to locate any vacuum leaks.
  3. If leaks are found, replace cracked hoses or use appropriate sealant for small holes.

3. Check and Clean MAF Sensor

• Tools Required: MAF sensor cleaner
• Sub-steps:
  1. Disconnect the MAF sensor electrical connector.
  2. Remove the MAF sensor from the air intake.
  3. Spray the MAF sensor with cleaner and allow it to dry completely before reinstallation.

4. Test and Repair Fuel System

• Sub-steps:
  1. Connect a fuel pressure gauge to the fuel rail.
  2. Turn the ignition on (do not start the engine) and check the fuel pressure reading.
  3. If pressure is low, inspect the fuel pump and filter for blockages and replace if needed.

5. Inspect Fuel Injectors

• Sub-steps:
  1. Remove the fuel rail to access the injectors.
  2. Inspect for clogs or leaks; clean or replace injectors as necessary.