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Home/Cars/Ford/F-150/13th Generation (2015-2020)/how to fix P0174 code on Ford F-150 13th Generation (2015-2020)

how to fix P0174 code on Ford F-150 13th Generation (2015-2020)

Ford F-150 13th Generation (2015-2020)

Severity: highDifficulty: mediumError Code: P01742-4 hours
3 min read
521 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 engine lean condition in Ford F-150 (2015-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
P0174
Component
Engine
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical systems.
  • ⚠Allow the engine to cool down before working on the fuel system to avoid burns.

Symptoms

  • •Check engine light illuminated
  • •Rough idle or unstable engine performance
  • •Decreased acceleration or power
  • •Poor fuel economy
  • •Engine stalling or hesitation during acceleration

Diagnostic Steps

  1. 1Scan for error codes using an OBD-II scanner to confirm P0174 and check for any additional codes.
  2. 2Inspect the air intake system for leaks, including vacuum hoses and the intake manifold.
  3. 3Check the fuel pressure using a fuel pressure gauge to ensure it's within specifications.
  4. 4Inspect the mass air flow (MAF) sensor for dirt or malfunction.
  5. 5Examine the fuel injectors for proper operation and signs of clogging.
  6. 6Review the engine's PCV system for any blockages or malfunctions.

Solution

Solution

1. Preparation

  • Gather necessary tools and parts.
  • Disconnect the battery to prevent electrical shorts during repairs.

2. Inspect and Repair the Air Intake System

  • Tools Required: Vacuum gauge, hose clamps, O-ring kit.
  • Check all hoses connected to the intake manifold for cracks or disconnections.
  • Replace any damaged hoses and ensure tight connections.

3. Clean or Replace the MAF Sensor

  • Tools Required: MAF sensor cleaner.
  • Remove the MAF sensor from the air intake duct.
  • Spray the MAF sensor with the cleaner and let it dry completely before reinstalling.

4. Test and Replace Fuel Pressure Regulator (if necessary)

  • Tools Required: Fuel pressure gauge.
  • Attach the fuel pressure gauge to the fuel rail.
  • Turn the ignition to the "on" position (do not start) and check the pressure reading.
  • If the pressure is below specifications, replace the fuel pressure regulator.

5. Inspect and Clean Fuel Injectors

  • Tools Required: Injector cleaning kit or replacement injectors.
  • Remove the fuel rail and injectors.
  • Clean the injectors using the cleaning kit or replace them if they are clogged or damaged.

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
  • Socket set
  • MAF sensor cleaner

Parts Required

  • Replacement vacuum hoses (if necessary)
  • MAF sensor (if cleaning does not resolve the issue)
  • Fuel pressure regulator (if faulty)
  • Fuel injectors (if clogged)

Additional Information

Error CodeP0174
Component

Engine

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

5 items

Parts

4 items

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