Question about 2000 Ford F150 Flareside SuperCab

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2000 ford f-150 will a bad pvc valve cause a po174 code???

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You have either a vacuum leak (hoses - gaskets) or your MAF needs a cleaning.

P0174 OBD-II Trouble Code - System Too Lean (Bank 2)

What does that mean?
Basically this means that an oxygen sensor in bank 2 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 2 is generally the side of the engine that doesn't have cylinder #1.

Note: This DTC is very similar to P0171, and in fact your vehicle may show both codes at the same time.

Symptoms
You will more than likely not notice any drivability problems, although there may be symptoms such as a lack of power, detonation (spark knock), and/or a hesitation/surge on acceleration.

Causes
A code P0174 may mean that one or more of the following has happened:
* The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters can cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
* There could be a vacuum leak downstream of the MAF sensor.

Possible Solutions include:
* In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
* Inspect all vacuum and PCV hoses, replace if necessary
* Check for a dirty fuel filter and proper fuel pressure

Hope helps.

Posted on Jun 07, 2010

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Have a 2000 ford explorer 4.o showed code po174 replaced both sensors on pasenger exauhst still floods now shows p1152 what should i do next i can also unplug the throttle position sensor plug while r


The p0174 is a lean code for bank 2, possible vacuum leak on the intake area cause of problem, check all vacuum lines and hoses, pcv valve and hose assembly, also could be upper intake gaskets worn

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2000 Ford F 150 Lightning. 5.4 supercharged. Keep


code p0171 refers to system too lean bank 1===causes --intake/ exhaust leak. AIR system---MAF?VAF sensor--fuel pressure/pump--injectors. HO2S
code po174 refers to system too lean bank 2===causes -intake/exhaust leak--fuel pressure /pump--injectors--AIR system---hose connection/s. You have ruled out the fuel pressure and pump so eliminate that from the causes. You have checked the o2 sensors so they can be ruled out. The MAF has been checked so rule that out. You are left with the AIR sensor and VAF sensor. and last the intake/ exhaust leaks. Check the gaskets on the exhaust manifold and the bolts are tight. Check for cracks in the manifold underneath. Check the cat converter for correct operation as that will affect the O2 sensor readings. Lastly if you have replaced any sensors with non genuine items they may be affecting the cpu checking processes and affecting the engine settings for economy. Ford and GMC have a mixture of OB2 and their OEM computer readings so you may have to talk with a ford service department to get that answer for 21

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1 Answer

Admission code PO174


There are many causes for this code.First i would get a can of carb cleaner and spray around all of the vacuum hoses and intake manifold and look for a vacuum leak. Make sure to inspect the PVC hose for burns or melting.If ther is no leaks then i would take the mass air flow sensor off and clean it with a non-chlronated brake cleaner and let dry for 15 minures then re-install.

Jan 13, 2012 | 2003 Ford Expedition

1 Answer

2000 ford windstar toubleshoot code PO174


CODE PO174 - FUEL SYSTEM TOO LEAN CYLINDER BANK 2. POSSIBLE CAUSES LEAKING EGR GASKET OR LEAKING EGR VALVE DIAPHRAM. MAF SENSOR DIRTY .AIR LEAKS AFTER THE MAF SENSOR OR LEAKS IN THE PCV SYSTEM.EXHAUST LEAK BEFORE OR NEAR THE HO2S IS MOUNTED.WEAK FUEL PUMP,RESTRICTED FUEL INJECTORS.

Aug 06, 2011 | 2000 Ford Windstar

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

1 Answer

How do I troubleshoot service engine codes for 2002 Ford F-150: PO174 and PO171?


This is the engine lean code. Too much air is entering the engine. Intake manifold gaskets can leak, vacuum lines get old and crack. Check the operation of the EGR and PVC valves, In short it is not easy to find the problem.

Sep 30, 2010 | 2002 Ford F150 Regular Cab

1 Answer

I have a 1998 ford f 150 just 5 min ago engine code po171 and po174 on the code reader how do i fix it


p0171 and p0174 are common issues the most of the time it is a vacuum leak check all vacuum lines have seen the vacuum line on the back of the air horn bad several times.

Sep 26, 2010 | 1998 Ford F150 Regular Cab

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 a code that i need to get the right part..PO174


po 174 is typically accompanied by code po 171 however the code is normally a vaccum leak fords normally have an issue with the pcv valve hose collapsing a busting or either the plastic intakes have a vaccum leak that clears up when the engine warms up which is normally the upper plenum gaskets

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