How to repair odb2 code p0171 - 1997 Oldsmobile 88

Question edited for clarity and add CAPS.
Question move to Cobalt category.

It is dumping extra fuel.

P0171 code SS SC - Cobalt SS Network

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Mar 1, 2014 - P0171 is a fuel trim lean code. Meaning the car is having to add more than 25% of the normally asked for fuel to reach proper O2 sensor ...

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For those with the FAMOUS P0171 CEL - Cobalts SS

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About the FAMOUS P0171 DTC (diagnostic troubleshooting code). If the PCM detect a lean condition (roughly 15% leaner than stock or more lean), this code ...

Missing: 2.0. ‎' Show results with: 2.0.

P0171 Chevy Cobalt: Fuel Trim System Lean Bank 1

700r4transmissionhq.com https://www.700r4transmissionhq.com > p0171-chevy...
Jul 28, 2018 - It indicates that your Chevy Cobalt is running lean on the bank one side. It's the most common air/fuel mixture-related code. It's not the most ...

‎Definition · ‎Symptoms · ‎Causes

Run an OBD code scanner or lookup what the code means. Don't always rely on the codes though.. they can be a red herring.

The service manual usually has information on the codes http://onlyrepairmanuals.com/downloads/nissan-pathfinder-repair-manual-1995-2005/

go to a different dealer these are generic obd ll codes that anyone can scan and get information also if they told you that i would ask for supervisor about it because someone is b/sing p0654
P0654 Chevrolet Engine Speed Output Circuit p0171 http://www.obd-codes.com/p0171 p1626 P1626 Chevrolet Theft Deterrent Fuel Enable Signal Not Received any of these code as you can see are available online in repair manuals etc

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

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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

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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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2000 Toyota Corolla, P0171 & P0420 codes - YouTube

? 5:43
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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 ...

? 26:31
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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 ...

According to the experience in the repair, fault code P0171 is used in the fuel system, such as a fuel injector or fuel filter clogging, fuel pressure problems.
The fuel adjustment values measured by GM TECH2, Fault code P0171 is Buick car of a multiple fault. Fault car most can be cleaned by the injector, replacing the fuel filter troubleshooting, also have individual vehicle is to solve the problem by replacing the air flow meter.

change bank 1 sensor 1 o2 sensor

What does that mean? 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.

Hi:

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

I would first change the fuel filter.