I keep getting obdii codes p0171 and p0174 2004 v85. P0174 is a diagnostic trouble code dtc for system too lean bank 2. I have changed every component i can think of but code comes back. Probeer het ford expedition trouble codes in a spray can may resolve this issue. Vacuum leaks with the ford expedition, one of the most common cause for the p0171 code to show is a vacuum leak. Ford expedition my 2003 ford expedition failed the smog test with fault codes p0171 and p0174. For most people the first sign that anything is wrong at all is the service engine soon. What are diagnostic codes p0171 and p0174 for a 2001. Engine performance diagnostics chapter 1 pages 912. May 12, 2011 fault codes p0355, p0171, p0174 on ford expedition 2001 what do i need to fix ford expedition question. Fault codes p0355, p0171, p0174 on ford expedition 2001 what do i need to fix.
P11,p1151,p0174, p0304, p0306 2000 ford expedition obd. If a car has a check engine light on and has p0171 and p0174 codes stored, the most likely cause is a vacuum leak. Checking the long term fuel trim values for bank 1 and bank 2 with your scan. This engine is known for vacuum leaks, so before you start throwing oxygen sensors at the problem, it pays to perform some diagnostics. Cant find the problem i replace the pcv hose clean the mass air flow replace the fuel filter old one wasnt bad sprayed the whole car with carb cleanner and nothing replace the throttle. Had the codes read and it came up with only p0174 and p0171. Video on how we diagnosed dtc p0171, system too lean bank 1, on a 1999 ford expedition.
Well i cleaned the maf sensor and no vaccuum leaks. Consult your service manual for its location if you need help. A ford p0171 is a lean code for cylinder financial institution 1, and p0174 is actually a lean code for cylinder financial institution 2. How do i repair a p0174 obd code 1999 ford expedition. P0171 ford tech notes if the p0171 is combined with the p0174 code, its very likely that the problem is caused by an intake leak. This diagnostic trouble code dtc is a generic powertrain code, which means that it applies to obdii equipped vehicles. Excessive oxygen readings in the exhaust will set lean codes. Find your owner manual, warranty here, and other information here. Cleaning the maf sensor can usually solve this problem. How could i check to make there isnt anything else to trigger these to codes. Overview if youve stumbled upon this site, you probably own a 2001 2004 ford f150 with the 4. This webpage contains 2004 ford expedition owners manual pdf used by ford garages, auto repair shops, ford dealerships and home mechanics.
My 1998 ford expedition is throwing a p0171 code system too lean. Ford expedition service repair manual ford expedition. How do i repair a p0174 obd code 1999 ford expedition i have a 99 ford expedition with a 4. Dec 10, 2007 p11,p1151,p0174, p0304, p0306 2000 ford expedition post by trex1 mon dec 10, 2007 10. They told me it was probably the maf sensor as that was the only codes and both came up. View and download ford expedition 2001 workshop manual online. This video is a demonstration on how to identify and fix a common part failure in the 2003 ford expedition 5. These codes commonly occur on many ford vehicles, and are set when the powertrain control module pcm sees the airfuel mixture is running too lean too much air, not enough fuel. This article will help you to diagnose diagnostic trouble code p0171 system too lean bank 1 andor p0174 system too lean bank 2 on your ford, mercury or lincoln 4. Ford expedition p0171 obdii trouble code diagnosis. The infamous p0171 and p0174 codes troubleshooting ford. Get access to our 2001 ford expedition repair information right now, online. In this video i will show you how to use freeze frame data and fuel trim numbers to identify a vacuum leak.
All of these p11 p1151 p0171 p0174 codes indicate a problem with a lean condition. Access quick reference guides, a roadside assistance card, a link to your vehicles warranty and supplemental information if available. System too lean p0171, p0174 vacuum leak quick test ford. P0174 fuel trim system lean bank 2 p0174 ford obdii trouble codedescription. P0171 and p0174 unfortunately, the quickest way to track this problem down is to hook the truck up to one of the pricey software programs and watch the fuel trims while the truck is running. P0174 system too lean bank 2 technical description. Ford expedition lean codes could caused by a leaky pcv hose. Mar 20, 2010 i have trouble codes po174 and p0171 on my ford expedition. Ford ranger obdii codes p0171 and p0174 maintenancerepairs. Issue some vehicles may exhibit a check engine light on and lean diagnostic trouble codes dtcs p0171 p0174 system too lean bank 1 or 2 stored in memory. System too lean p0171, p0174 vacuum leak quick test. Complete list of ford expedition auto service repair manuals. On a 2001 ford f150, the turn signal flasher is located in a relay box on the passengers side of the steering column.
But after a day the light came back on and it is still those codes. Anyone who ownsdrives one of these trucks is very likely to come across the dreaded p0171 p0174 service engine soon light. Error code p0174 system too lean bank 2 auto service costs. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for. Ford expedition introduced in 1996 to replace the ford bronco, the ford expedition is fivedoor, fullsize suv from american automaker ford motor company.
Common causes for ford egr low flow issues and p0401 fault code triggered. Forums ford expedition forum how to section this site uses cookies. I have smoke tested to engine looking for vacuum leaks and only thing i saw leaking was the egr valve. View and download ford 2001 expedition owners manual online. I have this code that keeps coming on, i have replace fuel filter, spark plugs, cleaned maf with electrical cleaner, replace air cleaner. These codes commonly occur on many ford vehicles, and are set when the powertrain control module pcm sees the airfuel mixture. The fuel to lean description in my service manual is just a little too vague for me to handle. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Code p0174 applies to v engines as they will have two banks, bank 1 and bank 2. F150 codes p0171 p0174 information ford f150 forum.
A p0174 lean code for bank 2 is the cylinder bank on the left driver side of the engine on ford vehicles with a transversemounted v6 engine and frontwheel. Lean codes p0171 and p0174 common causes denlors tools. Find your 2001 ford expedition repair manual right now at chilton. If a car has a check engine light on and has p0171 and p0174 codes stored. On ford some models dirty air filter, and dirty or faulty air flow sensor are the cause of the problem. In this video i will show you how to use freeze frame data and fuel trim numbers to. With the computer hooked up, if there is a specific cylinders running lean, it. Ford expedition p0174 diagnosis and meaning drivetrain. Causes causes of the obdii code p0174 a code p0174 may mean that one or more of the following has happened.
System too lean p0171, p0174 vacuum leak quick test ford 5. I have owned this vehicle since new and have always maintained it. Motor era offers service repair manuals for your ford expedition download your manual now. Owner manuals to download the owner manual, warranty guide or scheduled maintenance guide, select your vehicle information. Feb 14, 2011 p0171 and p0174 codes 2001 ford expedition 4x4 5. Check out our selection of parts and accessories at, or give us a call at 800. Make sure you consult your vehicles service manual to verify the location. The use of oiled air filters can cause the maf to become dirty if the filter is overoiled. The auto repair labor rates vary by location, your vehicles make and model, and even your engine type. Lean condition diagnosis on a ford p0171 p0174 youtube. P0174 tech notes if the p0171 is combined with the p0174 code, its very likely that the problem is caused by an intake leak. I cleared the p0171 p0174 by disconnecting the battery. The infamous p0171 and p0174 codes troubleshooting the same codes show up.
Dont replace the egr exhaust gas recirculation valve just yet if you have a p0401 code on a 4. Use fixd to scan your vehicle to verify p0174 is the only code present. One of the most common causes of ford p0171 and p0174 lean codes is a dirty mass airflow maf sensor. Available with rearwheel or fourwheel drive and a seating capacity of up to nine, the expedition is a popular choice among the consumers.
With this ford expedition workshop manual, you can perform every job that could be done by ford garages and mechanics from. Nov 03, 2011 i have a 2001 ford expedition with a 4. Maybe i didnt clear them, but i did get the cel to go off, with the idea that it would come back on if the trouble reoccurred. There arent usually any drivability issues associated with p0174. Fault codes p0355, p0171, p0174 on ford expedition 2001. Description of trouble code p0174 which is system too lean bank 2 and diagnostic repair.
P0174, p2195, p2197 i took the cover off and reach behind the throttle body feeling for the hose end when i felt a dimple and placed my finger on top, i felt the suction and. I found a pipe on the left side on the upper intake was disconnect from its elbow. Of course, it then had to go through a drive cycle and not get a repeat to internally clear the dtc. A ford p0171 is a lean code fpr cylinder bank 1, and p0174 is a lean code for cylinder bank 2. To access it, you must remove the panel under the steering column. Ford p0171 p0174 p1101 ford mass airflow sensor diagnosis video duration. I do know that the code represent there is to much air per fuel ratio on bank 2 side. Typically the code will be triggered by a lean condition in the engine. These codes usually come about on quite a few ford vehicles, and therefore are set when the powertrain management module pcm sees the airfuel mixture is running too lean also significantly air, not ample fuel. I was very low on gas and didnt know that was an issue at the time. The p0355 code is, ignition coil e primarysecondary circuit malfunction this has to do with the coils and the coil may be going bad, or you have a. Since you have codes that both banks are lean then the problem will most likely be from air entering the intake manifold after the mass air. Per the 1998 official toyota shop manual for a sienna, it could be a bad 1 coolant.
Brands of vehicles affected include but are not limited to ford, lexus, chevy, bmw, toyota, jaguar, acura, volvo, nissan, etc. Online library obd2 p0174 manual guide obd2 p0174 manual guide how to perform a vehicle check up keep your car in peak condition with this stepbystep car checkup how to diagnose obd ii fault codes p0171 and p0174 leaking intake and egr valve 06 ford freestyle we had a 2006 ford freestyle come in with fault codes p0171 and p0174. All of the info on this is identified by the jb code at the end of the part. If there are no intake leaks, the next step is to replace the air filter and clean the air flow meter.
Lean codes p0171 and p0174 common causes denlors auto. Print, read or download a pdf or browse an easy, online, clickable version. Ford ranger obdii codes p0171 and p0174 maintenance. Take a look around and see if you can find the vacuum leak. Jun 23, 2019 need to customize or repair your ford expedition. Ok guys, been looking for a couple of days now and cant seem to find the right issues. P0174 ford tech notes the codes is usually set when there is an intake leak after the air flow meter, before replacing any parts check for loose or broken hoses and intake gasket leak. The p0174 code on a ford expedition will often be thrown if the fuel injection system is not operating properly. My truck is a 99 ford f150 and starting to pee me off. Good but when i accelerate past 3500 rpm it miss fires and hesitates again. I have trouble codes po174 and p0171 on my ford fixya.
There are many things that can cause the p0171 trouble code on the ford expedition. Nov 14, 20 i have smoke tested to engine looking for vacuum leaks and only thing i saw leaking was the egr valve. Mar 08, 2015 this video is a demonstration on how to identify and fix a common part failure in the 2003 ford expedition 5. All of chiltons online content for the 2001 ford expedition is updated monthly, so youll have the most recent information on hand for any doityourself project. When a vehicle has the fault code p0174, it means that computer can no longer automatically adjust the mixture between air and fuel. These codes are set by the cars computer when it sees too much oxygen in the exhaust. Fault codes p0355, p0171, p0174 on ford expedition 2001 what. Year choose year 2021 2020 2019 2018 2017 2016 2015 2014 20 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996. For more information on this topic, i have written a field manual called engine performance diagnostics which. P0174 obdii trouble code fuel system too lean bank 2. Then i will be using water to locate the specific area of the vacuum leak. The auto repair labor rates vary widely across the country, and even within the same city. The best way to clean it is to take it off and clean it using a brake cleaner or electronic cleaner. Inspect all vacuum lines and hoses for leaks, and make sure they are properly connected.
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