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How to fix code PO174 on ford 2005 taurus - 2005 Ford Taurus

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4 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

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Posted on Jan 02, 2017

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Earl Norager

  • 355 Answers

SOURCE: I have 2000 Ford Taurus reading a code of PO174

WELL YOU MAY HAVE A VACUM LEAK IN IN TAKE AREA OR HOSE OR MASS FLOW AIR SENSOR THERE COULD BE SOME OTHERE THING BUT I WOULD LOOK FOR VACUM LEAK BUT COULD BE O2 SENSOR

Posted on Aug 12, 2009

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gfschef

  • 200 Answers

SOURCE: failed smog test because of fault code po174 :

Leak on the intake, bad EGR valve that's not closing. Perhaps a bad O2 sensor, but probably not. The O2 sensor is what detects a rich/lean condition. But when they fail they usually give their own error codes.

Posted on Feb 05, 2010

Ken17402

Ken Long

  • 615 Answers

SOURCE: 2003 Ford Expedition check engine light on .Codes PO171 & PO174

This is a tough one could be mass air flow sensor ,oxyegen sensors,a fuel filter. a vacum leak, a pcv valve if i missed anything just google po 171 &174 look for fix ya this issue has been addressed many times first check the vacum lines includeing the line on the pcv valve for cracks or splits in the lines .I would do the fuel filter if it hasnt been changed in the last couple of years , if still a problem the MAF sensor if your happy with my advise please leave me with great feedback

Posted on Feb 19, 2013

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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

1 Answer

2003 Ford Expedition check engine codes PO171 & PO174


You should be replacing all upstream oxygen sensors,
the ones at the inlet or pipe before the converter,on all
your vehicles at 100,000 miles

Go to Rock Auto.Com & buy two & install yourself

NTK 22060 $26.79 ea

Feb 18, 2013 | 2003 Ford Expedition

1 Answer

P0171 P0174


PO171- System Adaptive fuel too lean (bank 1)
PO174- " " " " " (bank 2)

Feb 22, 2011 | 2005 Ford Taurus

1 Answer

Check engine error code PO174


A PO174 LEAN CODE FOR BANK 2 IS THE CYLINDER BANK ON THE LEFT SIDE OF THE ENGINE
(THE CYLINDERS FACING THE FRONT OF YOUR CAR)
A LEAN FUEL CONDITION COULD EXIST IF THE ENGINE IS GETING
TO MUCH AIR AND/OR NOT GETING ENOUGH FUEL
THIS CAN CAUSE MISFIRE, ROUGH IDLE, AND HESITATION WHEN ACCELERATING
THIS COULD BE
A VACUME LEAK, A DIRTY AIRFLOW SENSOR,
A EGR VALVE NOT CLOSING LEAKING EXHAUST INTO THE INTAKE MANIFOLD
IF ITS NOT GETING ENOUGH FUEL THE FUEL PUMP COULD BE BAD, THE AIR FILTER COULD BE DIRTY
OR IT COULD BE DIRTY INJECTORS
ID TRY FUEL INJECTOR CLEANER AND A NEW AIR FILTER FIRST
THEN TRY CLEANING YOUR EGR VALVE. COPY THIS LINK TO YOUR BROWSER FOR
STEP BY STEP INSTRUCTIONS TO DO THIS.
www.ehow.com/how_4809842_clean-ford-taurus-egr-valve.html

IF THIS DONT DO IT I WOULD TAKE IT TO A MECHANIC TO HAVE THE OTHER THINGS CHECKED
HOPE THIS HELPS.

Dec 21, 2010 | 2001 Ford Taurus

3 Answers

2001 ford taurus 3.0(2) codepo174, changed oxygen sensors and fuel filter code still comes up on memory


This code is usually caused by leaking intake manifold gasket on the front side. With the engine running, spray carb cleaner or ether on the gaskets. If the engine revs at all, you have a leaky gasket. If not, check for other vacuum leaks in anything attached to that side of the manifold. If you have more questions, please let me know.

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Oct 27, 2010 | 2001 Ford Taurus

1 Answer

Generic code PO171 system 2 lean bank 1 generic


This can be caused by a faulty mass air flow sensor

Jul 06, 2010 | 1999 Ford Taurus

2 Answers

Failed smog test because of fault code po174 : system too lean (bank 2) ford taurus 1998


Leak on the intake, bad EGR valve that's not closing. Perhaps a bad O2 sensor, but probably not. The O2 sensor is what detects a rich/lean condition. But when they fail they usually give their own error codes.

Feb 05, 2010 | 1998 Ford Taurus

2 Answers

I have 2000 Ford Taurus reading a code of PO174 running lean on bank 2 what could do this


WELL YOU MAY HAVE A VACUM LEAK IN IN TAKE AREA OR HOSE OR MASS FLOW AIR SENSOR THERE COULD BE SOME OTHERE THING BUT I WOULD LOOK FOR VACUM LEAK BUT COULD BE O2 SENSOR

Aug 12, 2009 | 2000 Ford Taurus

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