Question about Ford F-250

2 Answers

04 f250 5.8 V8 engine light on with p2195 and p0171 DTC. I replaced both 02 oxygen front sensors and cleaned MAS with no change. after a few days I still get same codes. any Ideas? Randy

Posted by on

  • Randy Johnson Sep 16, 2010

    Can't you zero in on this problem a little better? Your solution had a very basic diagnosis with 22 possible causes within 5 major systems. I don't think I can resolve my problem in a timely manner without going through multiple system checks that would take me days to achieve. Randy

  • Randy Johnson Sep 17, 2010

    This solution was very helpful and was something I've heard is a probable cause. I will try your solution before going to dealer for expensive repair. Thanks, Randy

×

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 864 Answers

This is actually a recurring problem and is most likely caused by a vacuum leak. It is a rubber 90 degree elbow at the very rear of the manifold. This is generally the cause of the problem. It will be on the back of the motor and you should see it and it will most likely be cracked or sucked in more or less. Replace this elbow and you should have fixed the problem. Alot of people actually change the sensors to find out its a 2 dollar elbow and that will fix the problem. I have had to do this repair many times. If you need further assistance please feel free to follow up with a comment. If you have any questions also follow up with a comment. Thanks, Midwest-tek

Posted on Sep 17, 2010

  • Nathan Ayers
    Nathan Ayers Sep 17, 2010

    i dont know if when you said the comment that started with "Can't you zero in on this problem a little better?" if that was to another expert or me. But as i said its a small 90 degree elbow in the back of the manifold that is for vacuum that is exactly what it will be. Its rubber feeds off the front you cant miss it cause it should be sucked in. Like how a rubber hose is squished. Change that and it will fix your problem. If you need further assistance please let me know.

×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Ford Master
  • 75,822 Answers

I guess u know this is a lean engine O2 sensor code, here the list of items that cause this from the Ford diagnostics routine in the factory service manual.

04 f250 5.8 V8 engine - b329d97.gif

Posted on Sep 15, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

2000 toyota alvalon check engine light keeps coming on for code p0171 after replacing 02 oxygen sensor in bank 1


code p 0171 refers to system too lean bank 1===causes ---intake /exhaust leak---AIR system---MAF/VAF sensor/s---fuel pressure/ pump---injector/s---heated oxygen sensor (HO2S) the one in the exhaust manifold for bank 1 nearest the firewall

Apr 15, 2017 | Toyota Cars & Trucks

3 Answers

Engine code p110


P0303 Code - Cylinder #3 Misfire
P0110 DTC - IAT Circuit Malfunction
P2195 O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 1) Code
Potential causes of a P2195 code include:
p2195
p219521
  • Oxygen (O2) or A/F ratio sensor or sensor heater malfunction
  • Open or short in O2 sensor circuit (wiring, harness)
  • Fuel pressure or fuel injector problem
  • Faulty PCM
  • Intake air or engine vacuum leaks
  • Faulty fuel injector(s)
  • Fuel pressure too high or too low
  • PCV system leak/fault
  • A/F sensor relay faulty
  • MAF sensor malfunction
  • ECT sensor malfunction
  • Fuel pressure too low
  • Fuel leak
  • Air suction in air intake system
  • A code P0303 may mean that one or more of the following has happened:
  • Faulty spark plug or wire
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Running out of fuel
  • Poor compression
  • Defective computer
  • Potential causes of the P0110 DTC include:

  • po110
    • IAT sensor shifted out of airflow
    • Bad IAT sensor
    • Shorted to ground or open on signal circuit to IAT
    • Open in ground circuit to IAT
    • Poor connection at IAT (backed out terminals, broken connector locks, etc.)
    • Bad PCM

Sep 25, 2014 | 2003 Ford Focus

1 Answer

6troubles codes reportd;PO133N2 SENSOR CIRCUIT SLOW RESPONSE


Don't know the vehicle you have ,so if your
front or upstream oxygen sensors are over
100,000 miles, they need changing, on all
your vehicles ,front only, leave rear monitors
until the converters wear out at 12 years or so

Then you can diagnose what ever is left

You got slow & lean sensors
Their old & tired & lost their switching
ability

Google the codes & read up

Change Spark Plugs every 3 years
Clean MAF Sensor-CRC MAF Cleaner
New Air Filter

Mar 13, 2013 | Ford Cars & Trucks

1 Answer

Car chugs and sometimes stalls while idoling. codes that come up are P0771, P0128, P0171, and P2195 any help is appreciated


First code P0771 is shift solenoid E is stuck or has a performance problem.Code P0128 could be low coolant,leaking or stuck open thermostat,faulty coolant fan (running to much) or faulty coolant temperature sensor.Code P0171 fuel system to lean usally its a dirty mas air flow sensor or a weak fuel pump,fuel filter or fuel pressure regulator. Code P2195 is oxygen sensor stuck lean bank1 sensor 1.I would check for low fuel pressure causing the lean condition or faulty injectors (clogged).Also i would replace the coolant temperature sensor.

Oct 25, 2012 | 2006 Ford Fusion

1 Answer

Code po171 system too leen bank 1


DTC P0171 - System Too Lean (Bank 1)
Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1.

Note: This DTC (Diagnostic Trouble Code) is very similar to P0174, and in fact your vehicle may show both codes at the same time.

I would suggest that you take a look at the front oxygen sensor. Typically speaking the oxygen sensor causes this code to appear. Here is the possible cause list from the manual for your car.

Trouble Code: P0171 - Fuel System Lean (Bank 1)

Possible Causes:
Air leaks in intake manifold, exhaust pipes or exhaust manifold
Base engine mechanical problem causing a lean A/F condition
Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP)
Fuel delivery component fault (clogged filter, low fuel pressure)
O2 element is contaminated, deteriorated or it has failed
Vacuum hose is disconnected, broken, leaking or loose

Hope this helps (remember to rating this answer ans leave us a testimonial comment). Thank you for using FixYa.

Oct 12, 2011 | 2000 Ford F150 Flareside SuperCab

1 Answer

2003 Chrysler Town & Country po171 code


DTC P0171 - System Too Lean (Bank 1)
Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1.

Note: This DTC (Diagnostic Trouble Code) is very similar to P0174, and in fact your vehicle may show both codes at the same time.

I would suggest that you take a look at the front oxygen sensor. Typically speaking the oxygen sensor causes this code to appear. Here is the possible cause list from the manual for your car.

Trouble Code: P0171 (2.5L V6 Auto) - Fuel System Lean (Bank 1)

Possible Causes:
Air leaks in intake manifold, exhaust pipes or exhaust manifold
Base engine mechanical problem causing a lean A/F condition
Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP)
Fuel delivery component fault (clogged filter, low fuel pressure)
O2 element is contaminated, deteriorated or it has failed
Vacuum hose is disconnected, broken, leaking or loose

Hope this helps (remember to rating this answer ans leave us a testimonial comment). Thank you for using FixYa.

Oct 12, 2011 | 2001 Chrysler Town & Country

1 Answer

P0171 just replaced mass air flow


p0171 is system to lean ( bank 1 ). did you turn off check engine light with a scanner! if not go to auto-zone and they will erase it for free, then you can see if light stays off. There could be a vacuum leak downstream of the MAF sensor.
  • Inspect all vacuum and PCV hoses, replace if necessary
  • Check for a dirty fuel filter and proper fuel pressure. Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1. good-day!!
  • Aug 18, 2011 | 2002 Toyota RAV4

    1 Answer

    I have a 1997 Chevy Blazer with the 4.3 engine. The Service Engine light keeps coming on. I scanned the codes and replaced the O2 sensor just before the catalytic converter. The light is still coming on...


    P0146 pd means pending code
    Pending codes and DTCs? Posted on November 12, 2010 by fcrmaster
    When reading codes from your vehicle the fault code reader may show them as pending codes or normal Diagnostic Trouble Codes (DTC).
    Pending codes (also known as continuous monitor codes) will be registered when an intermittent fault occurs. If that fault does not happen again after x number of start/stop cycles, the ECU will erase the code from memory. If the fault is persistent it becomes a DTC.
    If you have read pending codes it is advisable to check the codes again after a week or so. If there is no apparent problem with the vehicle it is safe to erase the codes too and check back. But always make a note of any fault codes with the date and mileage of a vehicle.
    If the codes read include a DTC then you need to investigate further. This you can either do yourself or advise your garage. If, again, you don't see an apparent problem (depending n the severity of the code) with the vehicle you can note the codes down and erase them. Then check again after a week or a few days depending on how often the vehicle gets used. If a repair has been made (previous owner) the DTC may just not have been reset after the repair.
    The other numbers behind the code 01/06 , 02/06, 03/06 , 05/06 ,04/06 These don't mean anything . cheap code reader .
    DTC P0140 HO2S Circuit Insufficient Activity Sensor 2
    DTC P0146 HO2S Circuit Insufficient Activity Bank 1 Sensor 3
    DTC P0171 Fuel Trim System Lean Bank 1
    DTC P0174 Fuel Trim System Lean Bank 2
    Sorry but this is something you should take to a qualified repair shop that has a diagnostic tool that can view sensor scan data.
    Causes of lean condition trouble codes P0171 P0174 GM 5 3L

    Jul 23, 2017 | 1999 Chevrolet Camaro

    1 Answer

    Engine light coming on. Code reader says "too


    P0171 - System Too Lean (Bank 1)
    Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1.

    Note: This DTC is very similar to P0174, 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 P0171 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 may 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 (remember to rate this).

    Nov 09, 2010 | 2001 Mazda Protege

    Not finding what you are looking for?
    Cars & Trucks Logo

    Related Topics:

    79 people viewed this question

    Ask a Question

    Usually answered in minutes!

    Top Ford Experts

    yadayada
    yadayada

    Level 3 Expert

    75822 Answers

    Colin Stickland
    Colin Stickland

    Level 3 Expert

    22156 Answers

    fordexpert

    Level 3 Expert

    5501 Answers

    Are you a Ford Expert? Answer questions, earn points and help others

    Answer questions

    Manuals & User Guides

    Loading...