how to fix P0174 rich code in Honda Accord 10th Generation (2018-2022)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Ensure the vehicle is parked on a level surface and the engine is cool.

2. Inspect and Replace MAF Sensor

• Tools Required: Torx screwdriver, multimeter, cleaning spray (MAF sensor cleaner)
• Locate the MAF sensor in the air intake duct.
• Disconnect the electrical connector from the MAF sensor.
• Remove the MAF sensor from the air intake duct.
• Inspect the sensor for dirt; clean it gently using MAF cleaner. If damaged, replace it with a new sensor.
• Reinstall the MAF sensor and reconnect the electrical connector.

3. Check and Repair Vacuum Leaks

• Tools Required: Vacuum gauge, hose clamps
• With the engine running, use a vacuum gauge to check for proper vacuum levels.
• Inspect all vacuum hoses for cracks or disconnections. Replace any damaged hoses.
• Ensure that all clamps are secure and holding hoses in place.

4. Fuel System Inspection

• Tools Required: Fuel pressure gauge
• Attach the fuel pressure gauge to the fuel rail service port.
• Start the engine and check the fuel pressure against manufacturer specifications (usually around 40-50 psi).
• If the pressure is low, check the fuel pump and filter for blockages or faults, and replace as necessary.

5. Clear Codes and Test Drive

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0174 code.
• Test drive the vehicle under various conditions to ensure the issue has been resolved.