Question about 1999 Ford Taurus

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Generic code PO171 system 2 lean bank 1 generic

Generic code PO171 system 2 lean bank 1 generic code PO174 system 2 lean bank 2 manufacture code P1519 continuous intake manifold runner control closed bank 1 seep2006

Posted by Anonymous on

  • Anonymous Mar 17, 2014

    system too lean bank 1 PO171 what does this code mean ?

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  • 831 Answers

This can be caused by a faulty mass air flow sensor

Posted on Jul 09, 2010

  • georgw
    georgw Oct 22, 2013

    i changed it

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Related Questions:

1 Answer

What do the following codes mean? PO171,PO174 and PO430. And what is best solution to eliminate them? Is it something I can handle or should I carry it to my local mechanics?


PO171 Fuel System Lean Bank 1
PO174 Fuel System Lean Bank 2
PO430 Catalyst System Low Bank 2
A new fuel filter would be a good start.

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1 Answer

Po171 po174 code


Lean bank 1 and bank 2 , and throttle actuator system fault. Check reason for lean codes 1st, vacuum leak(s), air inlet boot and hoses, or low fuel pressure / clogged filter. Repair as needed then clear codes and recheck .

Jan 09, 2014 | Cars & Trucks

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Check engine light is on and when tested shows codes PO174 and PO171


The P0171 means System too Lean (Bank 1) and P0174 means System too Lean (Bank 2).
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FGTech Galletto 2-Master

Nov 08, 2012 | 2004 Suzuki Verona

1 Answer

Which 02 sensor is faulty on bank 1, with the Generic error code PO171? (system too lean).


bank 1 is the side of the motor cylinder 1 is on.there fore bank 1 sensor is the sensor in the exhaust that comes off of the head wear cylinder 1 is.

Jun 14, 2011 | 2002 Dodge Caravan

1 Answer

Error codes PO171, PO174 on 6.0 2004 silverado, what are they?


P0171 means: System too lean (Bank 1) P0174 means: System too lean (Bank 2). Sounds like your injectors are not getting enough fuel.

Nov 16, 2010 | Chevrolet Silverado 2500HD Cars & Trucks

1 Answer

Check engine light is on codes are po171 system too lean (bank 1) po174 system too lean (bank 2) so what can i do


Look for vacuum leaks,that are causing the O2 Sensors to go lean, and set codes on both banks

Nov 11, 2010 | 1997 Ford Expedition

1 Answer

97 Mercury cougar xr7 v6. po443, po430, po171, po174,


Sounds like you have low fuel supply or a leak in intake system causing lean codes, check fuek pressure and volume first. Cat converter effeciancy could be caused by the lean codes, purge system sounds like solenoid failure, check for high resistance accross purge vent solenoid.

Mar 08, 2010 | 1997 Mercury Cougar XR7

1 Answer

What do these trouble codes mean p0171 and p0174


po171 is system too lean,bank 1,po174,is system too lean,bank 2,It sounds like a fuel pressure problem.

Jan 05, 2010 | 2000 Chevrolet Blazer

1 Answer

1995 Windstar OBD II showing codes PO340, PO171, and PO174


Hello;
With those codes, the first place I would check is the fuel pressure. Also check the fuel filter and replace it if you haven't already. Then clear codes and recheck. Even if your fuel pressure is with in range it still may not push enough fuel to operate your vehicle.

Jan 15, 2009 | 1995 Ford Windstar

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