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 Malfunction Indicator Light (MIL) (2 trip detection logic)." property="og:description">
For Shop Owners

P0171 FORD - Fuel Injection System Too Lean Bank 1

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3 What does this mean?

Possible causes

  • Intake air leaks
  • Faulty front heated oxygen sensor
  • Ignition misfiring
  • Faulty fuel injectors
  • Exhaust gas leaks
  • Incorrect fuel pressure
  • Lack of fuel
  • Faulty Mass Air Flow (MAF) sensor
  • Incorrect Positive Crankcase Ventilation (PCV) hose connection
What does this mean?

Tech notes

If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replace the air filter and clean the air flow meter. If the problem persistss the front oxygen (O2) sensor may need to be replaced.

It's a very common problem for the Ford Windstar. Link to a website with information on how to repair:

2004 FORD F150 P0171, P0174, P0301, Misfire and Lean Condition













User Submitted Video
What does this mean?

When is the code detected?

- Fuel injection system does not operate properly.
- The amount of mixture ratio compensation is too small. (The mixture ratio is too lean.)

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Excessive Fuel Consumption

P0171 FORD Description

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. The Engine Control Module (ECM) calculates the necessary compensation to correct the offset between the actual and the theoretical ratios.

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 Malfunction Indicator Light (MIL) (2 trip detection logic).

OBDII Code P0171 Ford - Fuel Injection System Too Lean Bank 1 - k1no-portal.ru

P0171 FORD Information for specific Ford models

Need more help?

Do you need more help with the P0171 Ford code? Ask a question to our users or find an automotive repair shop near you to help fix the OBDII code

P0171 FORD Comments

Help us improve k1no-portal.ru. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P0171 Ford code? Have you replaced any parts?
Any information is appreciated. Thanks
Repair Importance Level: 3
1=Low 2=Medium 3=High
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard

Browse All Codes For Specific Model YearBeta
Ford F150 1998 Ford F150
1999 Ford F150
2000 Ford F150
2001 Ford F150
2002 Ford F150
2003 Ford F150
Ford Fusion 2006 Ford Fusion
2007 Ford Fusion
2008 Ford Fusion
2009 Ford Fusion
2010 Ford Fusion
2011 Ford Fusion
2012 Ford Fusion
Honda Accord 2008 Honda Accord
2009 Honda Accord
2010 Honda Accord
Honda Civic 1996 Honda Civic
1997 Honda Civic
1998 Honda Civic
1999 Honda Civic
2000 Honda Civic
Infiniti G35 2003 Infiniti G35
2004 Infiniti G35
2005 Infiniti G35
2006 Infiniti G35
Nissan Altima 2002 Nissan Altima
2003 Nissan Altima
2004 Nissan Altima
2005 Nissan Altima
2006 Nissan Altima
2008 Nissan Altima
2009 Nissan Altima
2010 Nissan Altima
2011 Nissan Altima
2012 Nissan Altima
Nissan Maxima 2005 Nissan Maxima
2006 Nissan Maxima
2007 Nissan Maxima
2008 Nissan Maxima
Nissan Pathfinder 2005 Nissan Pathfinder
2006 Nissan Pathfinder
2007 Nissan Pathfinder
2008 Nissan Pathfinder
2009 Nissan Pathfinder
2010 Nissan Pathfinder
2011 Nissan Pathfinder
2012 Nissan Pathfinder
Nissan Rogue 2008 Nissan Rogue
2009 Nissan Rogue
2010 Nissan Rogue
2011 Nissan Rogue
2012 Nissan Rogue
2013 Nissan Rogue
Nissan Sentra 2002 Nissan Sentra
2003 Nissan Sentra
2004 Nissan Sentra
2005 Nissan Sentra
2006 Nissan Sentra
2007 Nissan Sentra
2008 Nissan Sentra
2009 Nissan Sentra
2010 Nissan Sentra
2011 Nissan Sentra
2012 Nissan Sentra
Toyota Camry 1997 Toyota Camry
1998 Toyota Camry
1999 Toyota Camry
2000 Toyota Camry
2001 Toyota Camry
2006 Toyota Camry
2007 Toyota Camry
2008 Toyota Camry
2009 Toyota Camry
2010 Toyota Camry
2011 Toyota Camry
Toyota Corolla 2005 Toyota Corolla
Toyota Echo 2000 Toyota Echo
2001 Toyota Echo
2002 Toyota Echo
Toyota Highlander 2001 Toyota Highlander
2002 Toyota Highlander
2003 Toyota Highlander
2004 Toyota Highlander
2005 Toyota Highlander
2006 Toyota Highlander
2007 Toyota Highlander
Toyota Prius 2004 Toyota Prius
2005 Toyota Prius
2006 Toyota Prius
2007 Toyota Prius
2008 Toyota Prius
2009 Toyota Prius
Scion xB 2005 Scion xB
2006 Scion xB
2007 Scion xB
Advertisement
Home - For Shop Owners - About k1no-portal.ru - Privacy Policy - Terms and Conditions - - Copyright 2010-2018 k1no-portal.ru
k1no-portal.ru - - - -
Posted and Edit by 09-09-2016

Related pages


2000 oldsmobile alero transmission dipstickfuel pump ford f1502001 toyota corolla air filter2001 ford f150 intake manifold2004 nissan sentra98 chevy impala05 nissan altima 2.5s2007 yaris batterysubaru forester check engine light2000 lexus es300 ignition coilsymptoms of bad transmission solenoidmercedes benz service bulletinsmotor for 2002 nissan altima2001 nissan xterra knock sensorford ranger crankshaft sensortroubleshooting p01711999 honda civic o2 sensor problemsp0010 code2004 jeep grand cherokee transmission slippingairbag trouble codesmitsubishi obd ii2000 ford f150 coil packvct solenoid stuck openservice engine soon blinkingp0708 transmission range sensorp0161 mitsubishi montero sportcatalytic converter for honda accord1998 ford mustang fuel pumpe39 crankshaft position sensorhonda civic hybrid check engine light2005 ford f150 enginersx timing chain replacementwhat is a coolant temperature sensorwhat code is p04202002 cadillac escalade esvvectra fault codesvw golf crankshaft sensorpo455toyota camry 1997 engineecm tcmservice engine soon nissan sentrapo420 codep0456 nissanwhat does xts stand for cadillac2000 malibu problemsjeep speedford f150 code p1151p10112005 nissan titan transmission problemscharcoal canister toyota camrynissan 3.5 v6 engine problemshonda civic maintenance codes2001 ford focus ignition coil2011 chevy malibu oil changejeep tj fuel pump symptomswhat does a bad camshaft position sensor causep0420 pd code2001 nissan sentra engine diagramcoast infinititoyota highlander oxygen sensor2001 oldsmobile aurora battery locationp 0507maintenance required light honda accord 20052001 toyota corolla motorservice engine soon g35p1600 codeh02s sensor1998 ford taurus problemstoyota highlander warning lightshonda accord 2004 starter replacement costtoyota egr valve2007 prius warning lightsnissan sunny power steeringcatalytic converter toyota 4runner