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Engine Light on. Code P0171 was found

What do I need to do to fix problem

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Im getting P0171 code- lean .


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    obd ii - 'Check Engine' code P0171 System Too Lean - Is it ...

    mechanics.stackexchange.com/.../check-engine-code-p0171-system-too-l...
    Feb 11, 2014 - 'Check Engine' code P0171 System Too Lean - Is it safe to drive? ... My question is: is it okay to drive my car while it shows these codes? ... This will cause you to get increasingly worse fuel mileage. ... I am going to defer to your expertise, but I just want to ask if you've considered that lean-running engines ...

    P0171 and P0174 - OBD-II Trouble Codes - RepairPal

    repairpal.com > Encyclopedia > OBD II Codes
    Definition of error code P0171 and P0174 - System too Lean (Bank 1 and Bank 2). ...Before we get into the main causes of P0171, let's explore why this code matters. ..."Lean" running cars and light trucks are highly polluting vehicles. Most of ...

    Mazda tribute codes p0171 - Cars & Trucks 'Cars & Trucks

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    Question Product: Cars & Trucks Question Details: Mazda tribute codes p0171 ... I am getting the following (4) codes in a 2003 Mazda Protege5 engine: P0090 ...

    P0171 Code thrown while idle - Toyota Nation Forum : Toyota Car ...

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Jan 27, 2016 | Cars & Trucks

1 Answer

Codes po303, po171, po137. po420


2000 Toyota Corolla, P0171 & P0420 codes - YouTube

? 5:43
https://www.youtube.com/watch?v=ahJnJ19-vwY
Jun 13, 2011 - Uploaded by StandardBrandParts
Standard Motor Products presents: Technician's Toolbox "2000Toyota Corolla, P0171 & P0420 codes"

Smoke testing for codes P0171 P0174 - YouTube

? 5:48
https://www.youtube.com/watch?v=kZsqEfP-5zM
Jan 18, 2011 - Uploaded by realfixesrealfast
These two codes mean a V style engine is running lean on both banks. So you have to be thinking - what can ...

How to repair fault code P0171 and reset warning light ...

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Nov 27, 2014 - Uploaded by Peter Finn
How to repair and fix fault or error code P0171 and reset warning light Toyota Corolla VVT-i engine. ... Also how to find fault codeusing OBD scanner. ... Trouble shooting a misfire, Code P0300, P0301, P0302, P0303, P0304, P0305, P0306, ... 2000 Toyota Corolla, P0171 & P0420 codes - Duration: 5:43. by ...


Dec 02, 2015 | 2005 Toyota Corolla

2 Answers

Is it usual to have both p0171 and p0174 codes report at same time


sounds like the guy at the dealer ship hit the wires to the o2 sensor changing the oil fiter

Dec 22, 2012 | 1997 Lincoln Town Car

1 Answer

1996 ford escort, p0171 code and replaced all vacuum lines,. bad injector maybe? one ticks louder than the others. i cant find anything wrong


Hello, Its possible the noisy injectory is a problem. The code p0171 is a lean code. This usually means there is a Vacuum leak allowing more air into the engine than fuel. You can take a spray bottle of water and mist the engine while it is running. When you come across the part that is allowing more air into the engine, there should be a RPM change. Fix the part you find.

Usually the p0171 Code is an average of all cylinders on 1 bank of the engine. You could easily have a clogged Injector making the fuel mix lean. There are some kits in which you attach a tank of cleaner to the fuelrail and run the engine on the cleaner until it stalls. You will need to ask an Autoparts store if the kit is available.

In any case, reset the trouble light after making a repair.

Mar 18, 2011 | 1996 Ford Escort 4 Door

1 Answer

SES light on code P0171, 2005 Xterra, what to do??


P0171 is a lean oxygen sensor code for bank 1 on your engine.
It indicates that there is a lean condition (engine not getting enough
fuel or getting too much air) on that side of your engine.
Bank 1 is always the side of the engine where #1 cylinder is
located. In your case it is front-most cylinder on the right side
of the engine. (As viewed from the driver's seat)
So bank one is the passenger side.

If there are any other engine control codes, you need to fix those
first, as they may be the cause of the lean condition.

If that is the only code you are getting, then diagnostic testing
needs to be performed to determine the actual cause of the problem.

Possible causes are:

* Intake air / vacuum leaks
* Faulty / dirty fuel injector(s)
* Incorrect fuel pressure (Likely to cause both P0171 and P0174 at the same time)
* Low fuel volume (Pressure OK) (restricted fuel filter,etc.)
* Fauly Mass Airflow Sensor
* incorrect PCV hose connection
* Exhaust gas leaks
* Faulty Air Fuel Ratio Sensor

Dec 01, 2010 | 2005 Nissan Xterra

1 Answer

What is the code P1451 solution? Runs great, codes P1451, P0171 and P0174 are coming up and the engine light is on. Car needs to get inspected but codes need to be fixed.


P0171 - System too Lean (Bank 1)
P0174 - System too Lean (Bank 2)
P1451 - EVAP Control System Canister Vent Solenoid Circuit Malfunction
I'm afraid I don't have enough info to tell you how to fix the P1451 but I'm certain it's the cause of the other two codes.

Jun 08, 2010 | 2000 Ford Taurus

2 Answers

Service recommendation code p0171 p174 sytem too


2001 Buick LeSabre 3.8L V6 Check Engine Light come on after driving in 20 minutes,error code P0171.....O2 sensors and fuel filter changed ,how can I pinpoint the source.

Feb 09, 2010 | 2001 Hyundai Santa Fe

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