FAULTBASE
NEWSASKCars
© 2025 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Home/Cars/Honda/Pilot/YF4 (2023-Present)/how to resolve P0174 code in Honda Pilot Third Generation (2016-present)

how to resolve P0174 code in Honda Pilot Third Generation (2016-present)

Honda Pilot YF4 (2023-Present)

Severity: highDifficulty: mediumError Code: P01742-4 hours
4 min read
605 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix P0174 fuel system lean condition in Honda Pilot (2016-present). Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
P0174
Component
Fuel System
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical components.
  • ⚠Allow the engine to cool before working on the intake system to avoid burns.

Symptoms

  • •Check engine light illuminated
  • •Rough idle or unstable engine performance
  • •Decreased fuel efficiency
  • •Engine stalling or hesitation during acceleration
  • •Increased emissions during testing
  • •Strong fuel odor in the engine compartment

Diagnostic Steps

  1. 1Scan the vehicle's OBD-II system using a scanner to confirm the P0174 code and check for any additional codes.
  2. 2Inspect the air intake system for any vacuum leaks, including hoses, gaskets, and the intake manifold.
  3. 3Check the fuel pressure using a fuel pressure gauge to ensure it meets the specified range.
  4. 4Inspect the Mass Air Flow (MAF) sensor for dirt or damage, and clean or replace it as necessary.
  5. 5Examine the throttle body for carbon buildup and clean it if necessary.
  6. 6Check the fuel injectors for proper operation and signs of clogging or leaks.

Solution

Solution

1. Preparation

  • Gather all necessary tools and parts.
  • Disconnect the negative battery terminal to prevent electrical shorts.
  • Ensure the engine is cool before starting any work.

2. Inspect and Repair Vacuum Leaks

  • Sub-steps:
    1. Visually inspect all vacuum hoses for cracks or disconnections.
    2. Use a smoke machine or carburetor cleaner to detect leaks during idle.
    3. Replace any damaged hoses or gaskets as necessary.

3. Clean or Replace MAF Sensor

  • Sub-steps:
    1. Disconnect the electrical connector from the MAF sensor.
    2. Remove the MAF sensor from the air intake duct.
    3. Use MAF sensor cleaner to clean the sensor element carefully.
    4. Allow it to dry completely before reinstalling.
    5. Reinstall the MAF sensor and reconnect the electrical connector.

4. Check and Clean Throttle Body

  • Sub-steps:
    1. Remove the air intake duct from the throttle body.
    2. Use throttle body cleaner and a clean cloth to remove carbon buildup.
    3. Ensure the throttle plate moves freely and does not stick.
    4. Reinstall the air intake duct securely.

5. Fuel System Inspection

  • Sub-steps:
    1. Connect a fuel pressure gauge to the fuel rail.
    2. Turn the ignition key to the "ON" position (do not start) and check the fuel pressure.
    3. Compare the reading to the manufacturer's specifications (usually around 40-50 psi).
    4. If the fuel pressure is low, inspect the fuel pump, filter, and relay for issues.

Verification

After completing the repair, verify that the issue has been resolved:

  • Test the affected component to ensure it functions correctly
  • Check for any error codes or warning lights
  • Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • OBD-II scanner
  • Vacuum gauge
  • Fuel pressure gauge
  • Throttle body cleaner
  • MAF sensor cleaner
  • Basic hand tools (screwdrivers, socket set)

Parts Required

  • Replacement vacuum hoses or gaskets (if damaged)
  • New MAF sensor (if cleaning does not resolve the issue)
  • Fuel filter (if necessary)

Additional Information

Error CodeP0174
Component

Fuel System

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

6 items

Parts

3 items

Related Faults

Discover similar issues

  1. what should I do if my Honda Pilot YF3 (2016-2022) ABS light is on?

    Learn how to diagnose and fix the ABS light issue on your Honda Pilot YF3 (2016-2022). Step-by-step guide with symptoms, diagnostic steps, and repair ...

    Component:Brakes
    Symptoms
    • •ABS light illuminated on the dashboard
    • •Spongy or soft brake pedal feel
    • +{count} more
  2. why does my Honda Pilot YF3 (2016-2022) have refrigerant leaks?

    Learn how to diagnose and fix refrigerant leaks in the Honda Pilot YF3 (2016-2022) HVAC system. Step-by-step guide with symptoms, tools, and repair in...

    Component:HVAC
    Symptoms
    • •Air conditioning not cooling effectively
    • •Hissing or bubbling noise from the AC system
    • +{count} more
  3. why does my Honda Pilot YF3 (2016-2022) make a clunking noise when turning?

    Learn how to diagnose and fix clunking noise when turning in Honda Pilot YF3 (2016-2022). Step-by-step guide with diagnostic procedures and repair ins...

    Component:Suspension
    Symptoms
    • •Clunking noise when turning the steering wheel
    • •Noise may increase with sharper turns
    • +{count} more
  4. my Honda Pilot YF3 (2016-2022) runs rough after filling up with gas, why?

    Learn how to diagnose and fix rough running issues after refueling in Honda Pilot YF3 (2016-2022). Step-by-step guide with symptoms and solutions.

    Component:Fuel System
    Symptoms
    • •Check engine light illuminated
    • •Rough idle after refueling
    • +{count} more
  5. how do I clear the check engine light on my Honda Pilot YF3 (2016-2022)?

    Learn how to clear the check engine light on your 2016-2022 Honda Pilot YF3. Step-by-step guide with diagnostic procedures and verification tips.

    Component:Electrical
    Symptoms
    • •Check engine light illuminated
    • •No noticeable symptoms of performance issues
    • +{count} more
  6. how to fix a leaking sunroof in my Honda Pilot YF3 (2016-2022)?

    Learn how to fix a leaking sunroof in your Honda Pilot YF3 (2016-2022). Step-by-step guide with diagnostic steps, tools required, and repair instructi...

    Component:Body/Interior
    Symptoms
    • •Water pooling on the interior floor or seats
    • •Damp or wet headliner around the sunroof area
    • +{count} more

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation