my Honda Accord 9th Generation (2013-2017) shows P0171 code what does it mean

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative terminal of the battery.
• Allow the engine to cool down.

2. Inspect and Repair Air Intake

• Tools Required: Screwdriver set, hose clamps.
• Check all air intake hoses and connections for signs of leaks or damage.
• Replace any damaged hoses or tighten loose clamps.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner or isopropyl alcohol.
• Disconnect the MAF sensor connector.
• Remove the MAF sensor from its housing.
• Clean the sensor wires carefully with MAF cleaner.
• Reinstall the MAF sensor and reconnect the electrical connector.

4. Check Fuel Pressure

• Tools Required: Fuel pressure gauge.
• Locate the fuel rail and connect the fuel pressure gauge.
• Turn the ignition on (without starting the engine) and check the pressure reading.
• If pressure is below specifications (check manufacturer details), replace the fuel pump or fuel filter as necessary.

5. Inspect Oxygen Sensors

• Tools Required: O2 sensor socket.
• Locate the upstream oxygen sensor.
• Disconnect the sensor and use the O2 sensor socket to remove it.
• Inspect for any signs of damage; replace it if necessary.
• Reinstall the new or cleaned sensor.

6. Clear Codes and Test Drive

• Reconnect the negative terminal of the battery.
• Use the OBD-II scanner to clear the P0171 code.
• Test drive the vehicle to ensure the issue is resolved.