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

Solution

1. Preparation

• Gather necessary tools and parts.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the negative battery terminal.

2. Inspect and Replace Vacuum Hoses

• Tools Required: Hose clamps, pliers, replacement hoses (if needed).
• Inspect all vacuum hoses connected to the intake manifold for cracks or disconnections.
• Replace any damaged hoses with new ones, ensuring a snug fit and secure with clamps.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, torx screwdriver.
• Remove the MAF sensor from the air intake duct.
• Spray the MAF sensor with MAF cleaner and allow it to dry completely.
• Reinstall the MAF sensor ensuring that it is secured properly.

4. Check and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge, wrenches.
• Connect the fuel pressure gauge to the fuel rail service port.
• Turn the ignition to the "ON" position (do not start the engine) to check the fuel pressure.
• If pressure is below specifications, inspect and replace the fuel pump or fuel filter as necessary.

5. Inspect Fuel Injectors

• Tools Required: Injector cleaner, multimeter.
• Remove the fuel injectors and inspect them for clogging or damage.
• Clean the injectors using an appropriate cleaning solution or replace them if needed.
• Reinstall and ensure all connections are tight.

6. Reassemble and Test

• Reconnect the negative battery terminal.
• Start the engine and let it idle for a few minutes.
• Use the OBD-II scanner to check if the P0171 code reappears.