what does error code P0171 mean for my Honda CR-V Sixth Generation (2023-present)

Solution

1. Preparation

• Gather tools and parts required.
• Disconnect the battery to prevent electrical shorts.
• Ensure the vehicle is on a level surface and secure with wheel chocks.

2. Inspect for Vacuum Leaks

• Use a smoke machine or carburetor cleaner to find leaks:
  • Apply smoke or cleaner around the intake manifold, hoses, and gaskets.
  • Watch for changes in engine RPM to identify leaks.

3. Clean or Replace MAF Sensor

• Remove the MAF sensor from the air intake:
  • Use a Torx or Phillips screwdriver as necessary.
• Clean the sensor with MAF cleaner:
  • Spray the cleaner onto the sensor and let it dry completely.
• If damaged, replace the MAF sensor with a new one.

4. Test and Repair Fuel System

• Fuel Pressure Testing:
  • Connect a fuel pressure gauge to the fuel rail.
  • Turn the ignition to the "ON" position (do not start the engine) and check the reading.
  • If pressure is low, check the fuel pump and filter.
• Fuel Injector Inspection:
  • Remove fuel injectors from the engine.
  • Clean with an ultrasonic cleaner if clogged or replace as necessary.

5. Reassemble and Reconnect

• Reinstall any components removed during inspection or cleaning.
• Ensure all connections are tight and secure.
• Reconnect the battery.