P0174 Ford Code - Fuel Injection System Too Lean Bank 2
Quick Answer
With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. Common causes include Intake air leaks, Faulty front heated oxygen sensor, Ignition misfiring. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0174 Ford indicates Fuel Injection System Too Lean Bank 2.
- Common causes
- Common causes include Intake air leaks, Faulty front heated oxygen sensor, Ignition misfiring.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0174 Ford Description
In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the ECM judges the condition as the fuel injection system malfunction and light up the MIL (2 trip detection logic).
What are the Possible Causes of the DTC P0174 Ford?
- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Positive Crankcase Ventilation (PCV)
- Faulty Mass Air Flow (MAF) sensor
- Incorrect PCV hose connection
How to Fix the DTC P0174 Ford?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
Link to a website with information on how to replace the Intake Plenum Gasket and seals:
1999-2003 Fords Windstar Code P0174
There is Factory Service Bulletin for the following Ford Models:
2009-2010 Ford F-150
2009-2011 Ford E-150
2009-2011 Ford E-250
2009-2011 Ford E-350
2009-2011 Ford E-450
2009-2011 Ford Expedition
2011 Ford F-250
2011 Ford F-35
Ford Factory Service Bulletin OBDII Code P0174
2004 FORD F150 P0171, P0174, P0301, Misfire, and Lean Condition
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0174 Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0174 Ford code?
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Need Help with the Code?
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Information for Specific Ford Models
- P0174 1997 Ford F150 — System Too Lean Bank 2
- P0174 1998 Ford F150 — System Too Lean Bank 2
- P0174 1999 Ford F150 — System Too Lean Bank 2
- P0174 2000 Ford F150 — System Too Lean Bank 2
- P0174 2001 Ford F150 — System Too Lean Bank 2
- P0174 2002 Ford F150 — System Too Lean Bank 2
- P0174 2003 Ford F150 — System Too Lean Bank 2
- P0174 2004 Ford F150 — Fuel Injection System Too Lean Bank 2
- P0174 2005 Ford F150 — Fuel Injection System Too Lean Bank 2
- P0174 2006 Ford F150 — Fuel Injection System Too Lean Bank 2
- P0174 2007 Ford F150 — Fuel Injection System Too Lean Bank 2
- P0174 2008 Ford F150 — Fuel Injection System Too Lean Bank 2
- P0174 2006 Ford Fusion — Fuel Injection System Too Lean Bank 2
- P0174 2007 Ford Fusion — Fuel Injection System Too Lean Bank 2
- P0174 2008 Ford Fusion — Fuel Injection System Too Lean Bank 2
- P0174 2009 Ford Fusion — Fuel Injection System Too Lean Bank 2
- P0174 2010 Ford Fusion — Fuel Injection System Too Lean Bank 2
- P0174 2011 Ford Fusion — Fuel Injection System Too Lean Bank 2
- P0174 2012 Ford Fusion — Fuel Injection System Too Lean Bank 2
- P0174 1999 Ford Windstar — Fuel Injection System Too Lean Bank 2
- P0174 2000 Ford Windstar — Fuel Injection System Too Lean Bank 2
- P0174 2001 Ford Windstar — Fuel Injection System Too Lean Bank 2
- P0174 2002 Ford Windstar — Fuel Injection System Too Lean Bank 2
- P0174 2003 Ford Windstar — Fuel Injection System Too Lean Bank 2
Frequently Asked Questions about P0174 Ford Code
1. What are the common symptoms of OBDII code P0174 Ford (Fuel Injection System Too Lean Bank 2)?
- Common symptoms include rough idling, poor acceleration, hesitation when driving, and potential stalling.
2. What can cause OBDII code P0174 Ford to trigger?
- Possible causes of this code include a vacuum leak, faulty oxygen sensor, clogged fuel filter, or a malfunctioning fuel injector.
3. How can I diagnose the issue causing OBDII code P0174 Ford?
- Diagnose the problem by checking for vacuum leaks, testing the oxygen sensor, inspecting the fuel filter, and verifying the fuel injector operation.
4. Can a dirty or faulty mass airflow sensor trigger OBDII code P0174 Ford?
- Yes, a dirty or faulty mass airflow sensor can cause the engine to run lean and trigger the P0174 code.
5. What are the repair tips for fixing OBDII code P0174 Ford?
- Repair tips may include cleaning or replacing the mass airflow sensor, fixing any vacuum leaks, replacing the oxygen sensor, or cleaning/replacing the fuel filter.
6. Is it safe to continue driving with OBDII code P0174 Ford active?
- It is not recommended to drive with this code active as it can lead to poor engine performance and potential damage to the vehicle over time.
7. Can a failing fuel pump cause OBDII code P0174 Ford to appear?
- Yes, a failing fuel pump can result in insufficient fuel delivery, leading to a lean condition and triggering the P0174 code.
8. Will resetting the OBDII code P0174 Ford make the problem go away?
- Resetting the code may temporarily turn off the check engine light, but it will not fix the underlying issue causing the lean condition on Bank 2.
9. How important is it to address OBDII code P0174 Ford promptly?
- It is crucial to address this code promptly to prevent further engine damage, ensure optimal fuel efficiency, and maintain overall vehicle performance.
10. Can a faulty catalytic converter be a reason for OBDII code P0174 Ford to be activated?
- A faulty catalytic converter can potentially cause the engine to run lean and trigger the P0174 code, especially if left unresolved for an extended period.
Discuss the causes and fixes for P0174 Ford OBDII Code
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I did all that on the 97 windstar and still got the code and sacks as if its going to die what could it be PCM?
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What exactly is "All" did you check for intake leaks or replaced the intake gasket as recommended on the "Tech Notes"?
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I have the same code on a 05 ford taurus and idk what the hell it is me and the dad tried everything
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have a ford explorer xlt 1996 the problem is the code p0174 y replace the intake gasket mfl and i replace the sparks and cables thermostat and sensor temp oxygen heaterd sensor and EGR AND CLEAN THE MAF SENSOR / IAC AND STILL HAVE THE PROBLEM IDLE
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Try replacing the fuel filter, for your car most of the times the problem is the fuel filter. Filter gets clogged and not enough fuel get to the engine. If the problem persists you may have to replace the Mass Air Flow (MAF) sensor.
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