What we can do for auto error code P0171 ?

p0171

You can try to do these below :

1.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.

2.There could be a vacuum leak downstream of the MAF sensor

3.Possible cracked vacuum or PCV line/connection

4.Faulty or stuck open PCV valve

5.Failed or faulty oxygen sensor (bank 1, sensor 1)

6.Sticking/plugged or failed fuel injector

7.Low fuel pressure (possible plugged/dirty fuel filter!)

8.Exhaust leak between engine and first oxygen sensor.

Of course, this is not completed list. You can add your versions in comments.
Learn more: https://www.obd-codes.com/p0171

Want to look video ?

Comments

Post a Comment

Popular posts from this blog

How to calibrate electric power steering after updating modules for Dodge

Image
I just got done flashing dodge 2015   Dodge Dart   updated the electronic power steering   and also the ECU had updates for   the shutter valve . Here is the track light and engine light. let's do the   health report . scanning 7% scanning 20% scanning 100% yes I'm sure   now this thing had a frickin update for   the electronic power steering for  causing like a shimmy anywhere from   fifty to seventy miles an hour and that shimmy could be misdiagnosed as   wheel out of balance . so it's this crazy   that you could have thrown you know  all kinds of tires at this thing   balanced like crazy and all it   needed was it was an update so   wait for it to finish up 100 percent . okay steering angle sensor implausible   message data length received from   steering angle sensors .  so I'm sure these   ABS there's gonna be steering angle   sensor codes  . in here we probably have to   do the steering angle reset i
Read more

Launch X431 Diagun IV power balance test on Ford

Image
Showing the power balance test on a 2005 Ford 500 with two cylinders having steady misfires, this vehicle also had a plugged rear catalyst from the severe misfires on the rear bank. Screen -1 Screen -2 Screen -3 Screen -4 Like the special function,well done! X431 bidirectional scan tool:  https://kingbolen-official.myshopify.com/collections/professional-bi-directional-scanner Ask a question :  https://www.facebook.com/Kingbolen.fans/ Twitter:  https://twitter.com/kingbolenfans
Read more

DIY reset throttle body Launch CRP129E

Image
How to reset  throttle body on  Chevy ? Car model : 2008 Chevy Express Van Device: Launch CRP129E Special function : throttle body relearn 1.Click Reset 2.Click "ELEC throttle RLRN" 3. IDLE Learn Reset,click OK 4. It works well again to read live data after resetted Video here: X431 bidirectional scan tool:  https://kingbolen-official.myshopify.com/collections/professional-bi-directional-scanner Ask a question :  https://www.facebook.com/Kingbolen.fans/ Twitter:  https://twitter.com/kingbolenfans
Read more