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

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal.
• Ensure the engine is cool before starting any work.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, screwdrivers
• Check the air intake hoses for any cracks or loose connections and repair or replace as necessary.
• Inspect the intake manifold gasket. If damaged, replace it.

3. Fuel Pressure Check

• Tools Required: Fuel pressure gauge
• Connect the fuel pressure gauge to the fuel rail.
• Turn the ignition to the "On" position (do not start the engine) and check the fuel pressure reading.
• If the pressure is below specifications (consult the repair manual for specific values), replace the fuel pump or fuel filter as needed.

4. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner (non-residue cleaner)
• Disconnect the MAF sensor connector.
• Remove the MAF sensor from the intake.
• Clean the sensor elements gently using MAF sensor cleaner, or replace the sensor if damaged.

5. Inspect and Clean Fuel Injectors

• Tools Required: Injector cleaning kit or ultrasonic cleaner
• Remove the fuel rail with the injectors attached.
• Inspect the injectors for clogs or leaks.
• Clean the injectors using an injector cleaning kit or replace them if necessary.

6. Reassemble and Test

• Reinstall all components in reverse order of removal.
• Reconnect the battery terminal.
• Start the engine and allow it to reach operating temperature.