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Probably a bad oxygen sensor. Lean bank one implies that more air than desired in the air/fuel mixture is being burned by the engine, or in the case of a "V" engine, the bank with cylinder 1. This could be caused by a lack of fuel, vacuum leak or fading output from the oxygen sensor in your exhaust pipe among other things.
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What does P1128 code mean in a 2009 dodge grand caravan mean?
Bank one fuel system lean. Test fuel pressure, check for vacuum leaks,
What is code p0171 for jaguar 2003 xtype?
It is rich or lean bank 1 or 2 i am not sure which one it is but i know it is rich or lean code they have the same codes as ford.
What does p0131 code mean on 97 chevy tahoe?
This means that the Oxygen sensor #1 on bank one went lean and stayed lean for longer than allowed.Look for in this order:Cylinders miss-firingVacuum leaksExhaust manifold leaksFaulty sensor.
How do you repair a 2002 Bonneville when the check engine code is Lean Bank One?
it is your 02 sensor/ bank one usally means the one before your cat. convertor "Lean Bank One" means that the first bank of cylinders, or 3 cylinders on your V6, are not getting enough fuel to mix with the air, hence the term "lean". This is usually solved by cleaning the fuel injectors, and this is most likely your problem, because if the fuel filter or pump were clogged you would have gotten a code of "Lean Bank One" and "Lean Bank Two". It is possible it could have something to do with your oxygen sensor, and the first answer mentioned, because this sensor measures exhaust gas and sends a voltage signal to the computer telling it how rich or lean the engine is running.
Does bank one and bank two mean the fuel pump is going out?
If you are getting codes for bank 1 and bank 2 lean, then yes it is a possibility.
What does po171 mean for 1999 ford f150?
system to lean bank one 02 sensor ?
What does code 171 on a Kia Sportage mean?
po171 means System too lean in bank 1 ,translation o2 sensor bad, probably the one before catalytic converter,but could be one after cat.
What is code 1131 on 1998 grand marquis?
Bank one is "LEAN" - get a good bottle of Fuel Injector Cleaner and see if that helps.
How do you fix obd code PO171 on a 99 ford explorer?
Too lean bank one check fuel pressure-your pump is probably going out.
What does code P0172 mean on a Chrysler?
Bank one fuel system rich.
What does a code P0420 mean on a Chrysler 300m?
Catalytic converter failure bank one.Catalytic converter failure bank one.
What does the code P0171 bank one lean on a 2000 lesabre mean?
Too much air in comparison to fuel-check fuel pressure, if ok, look for a leaking/damaged vacuum hose, typically it will be the one attached to the air cleaner developed a split. Any unmetered air entering engine could cause this code
