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)." property="og:description">
For Shop Owners
itimaster.ru
OBDII Code List
P0171 2002 TOYOTA HIGHLANDER

P0171 2002 TOYOTA HIGHLANDER - 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 persists the front oxygen (O2) sensor may need to be replaced.


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 2002 TOYOTA HIGHLANDER 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 MIL (2 trip detection logic).

OBDII Code P0171 2002 Toyota Highlander - System Too Lean Bank 1 - itimaster.ru

Need more help?

Do you need more help with the P0171 2002 Toyota Highlander code? Ask a question to our users or find an automotive repair shop near you to help fix the OBDII code

P0171 2002 TOYOTA HIGHLANDER Comments

Help us improve itimaster.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 2002 Toyota Highlander 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 itimaster.ru - Privacy Policy - Terms and Conditions - - Copyright 2010-2018 itimaster.ru
itimaster.ru - - - -
Posted and Edit by 06-14-2015

Related pages


chrysler grand voyager warning lightsengine code p04401994 honda accord vss locationmiata charcoal canisterbuick rendezvous check engine lightchrysler 300 hemi 2006engine coolant temperature sensor symptoms2001 dodge ram 1500 pcm2005 chevy malibu thermostat2003 ford expedition transmission problemsbmw 325xi service engine soon light1999 oldsmobile alero engine2003 ford escape transmission fluid2003 mazda mpv common problemsp0118 vw2003 malibu problems2003 dodge ram 1500 alternatornissan maxima stick shift2002 buick rendezvous cxl problemsforester check engine cruise flashingp1288 ford f1502003 ford f150 exhaust manifold2005 saturn ion ignition switch02 sensor bank 1 sensor 2po172 engine codeengine for 98 honda civic2000 blazer thermostat96 nissan maxima knock sensorbmw engine malfunction reduced power 535ivw gti 2002rick bokman oleanobd2 code reader for iphonetire pro columbus gapo122ford windstar 1998engine coolant temperature sensor circuit high voltagebabylon autosmazda diagnostic codes2004 nissan titan transmission problemsp0118 engine coolant temperature circuit high inputjeep grand cherokee o2 sensor2000 nissan frontier egr valve2001 highlander problemsinfiniti g35x 2005lazars trailershonda odyssey catalytic converterpo301 engine code2004 lr3versa solenoid valveschevy 5.7 engine2003 civic transmission problemsbuick lucerne enginep0340 nissan x trailp0335 mercedes2004 cadillac escalade ext specs2001 chevy impala overheating problems2006 chrysler pacifica heater problemspath finder bankp0 300 codep0725 code2007 ford windstarp01752010 silverado stabilitrak problemsspark plug too leantoyota sienna o2 sensorfuel pump 2005 nissan altimatiming belt toyota camry 19982000 honda accord climate control problemdodge ram clutchhonda civic 2006 motor2002 pontiac bonneville transmission95 honda accord speed sensorp0420 catalyst2003 honda pilot egr valvevtc valve2002 nissan maxima pcv valveford taurus 2002 enginecode p0010