how to solve P0171 code in my Honda CR-V Sixth Generation (2023-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery cable to ensure safety.
• Allow the engine to cool down if it has been running.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, vacuum gauge.
• Sub-steps:
  1. Remove the air intake duct and inspect for cracks or damage.
  2. Replace any damaged hoses or gaskets.
  3. Reinstall the air intake duct securely to prevent leaks.

3. Test and Clean MAF Sensor

• Tools Required: MAF sensor cleaner, screwdriver.
• Sub-steps:
  1. Disconnect the MAF sensor connector.
  2. Remove the MAF sensor from the intake.
  3. Spray the MAF sensor with MAF cleaner and allow it to dry.
  4. Reinstall the MAF sensor and reconnect the electrical connector.

4. Check and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge, basic hand tools.
• Sub-steps:
  1. Locate the fuel pressure test port on the fuel rail.
  2. Connect the fuel pressure gauge to the test port.
  3. Start the engine and monitor the pressure; it should meet specifications (refer to the service manual).
  4. If pressure is low, check the fuel pump and filter for obstructions or failure.

5. Inspect Fuel Injectors

• Tools Required: Socket set, injector cleaner (if needed).
• Sub-steps:
  1. Remove the fuel rail and inspect each injector visually for clogs or leaks.
  2. Use an injector cleaner to clean any clogged injectors.
  3. Reinstall the fuel rail ensuring all connections are secure.