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What does lean onright bank mean?

Meter reads p0107

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PO 107 --Manifold Absolute Pressure Circuit Low Input

Lean Right bank --has to do with an Oxygen Sensor or
other things causing an O2 Code

I suggest you have a repair shop properly diagnose &
find out what the real issues are

Posted on Dec 09, 2012

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: what does engine fault code po171 system too lean bank 1 mean thanks

i think its the oxygen sensor (pre cat) in exhaust

Posted on Sep 23, 2008

  • 142 Answers

SOURCE: engine light on 3 codes in system

The lean running codes are related to the p-1000 code...

Running lean on bank 1 and bank 2 means your oxygen sensors sense too much oxygen in your exhaust flow. This means either your engine is getting unmetered air (air that the engine does not know is coming in, therefore does not send fuel to compensate for...) (air that your mass air flow sensor does not see). You could have either a bad mass air flow (MAF) sensor (in the intake piping after the filter; this sensor tells your engine how much air it's taking in, so it can send the right amount of fuel through the injectors to properly burn with the air available with as little emissions as possible), or you could also have a cracked/broken intake piping after this sensor which lets air in the intake that the sensor does not measure... A large vacuum leak could also let unmetered air in the engine.

Or... Another possibility here would be low fuel pressure (bad fuel pump, bad fuel pressure regulator, fuel leak), as not enough fuel for the air would also cause the same lean condition.

It could be that some oxygen sensors are bad...

These conditions are hard to pinpoint exactly unless you have a scanner that can read sensor data (MAF Flow, fuel pressure, oxygen sensor values)...

The first thing I'd do would be to check for cracks or damage in the intake piping... If there is none, then it might be a low fuel pressure issue, or sensor problems...

Posted on May 08, 2009

emissionwiz
  • 76164 Answers

SOURCE: 2001 ford escort 4 dorr. 2.0 sohc engine

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 theMaf Sensors leak the silicone potting material used to protect the circuitry.
  • There could be a downstream vacuum leak of the MAF sensor. or a leaking intake manifold gasket or loose vacuum hose on the engine.
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

Posted on Jul 15, 2009

  • 59 Answers

SOURCE: 97 ford f250 scanner says system too lean bank 1

These codes are usually for oxygen sensors bank 1 is front bank2 is rear best to place both at the same time.

Posted on Sep 08, 2009

  • 146 Answers

SOURCE: OBD2 METER READS ENGINE TOO LEAN

Lean running condition A lean running condition means that the air/fuel mixture is unbalanced, and that the engine is getting either too much air, not enough fuel, or a combination of both. Optimally, this ratio should be around 14.7 parts air to 1 part fuel by mass, at low or cruising loads. This ratio is known as stoichiometric for gasoline. Ideally, at WOT, you should aim between 11.5:1 (Rich best torque at WOT) and 13.3:1 (Lean best torque at WOT).
Running lean, like having your spark timing too advanced, creates much more heat during the combustion process. This can lead to piston seizure, a hole in the piston, melted spark plug electrode or other complications due to overheating. You will not be producing peak power, and your exhaust will also emit more oxides of nitrogen, arguably one of the worst byproducts of gasoline combustion for our environment.
Common causes of a lean running condition are an improperly tuned carburetor, clogged fuel line, clogged fuel filter, or a vacuum leak.
Preforming a plug chop is a good way to find out if your engine is running too lean, as you will see a powdery white residue on your spark plug in the presence of a lean condition.
On the other end of the spectrum, richer ratios will also cause lost power, however this will most likely be accompanied by black smoke (around the 9:1 fuel/air ratio area), and fouled spark plugs.

Posted on May 30, 2010

Testimonial: "THANK YOU SO MUCH ,MY MECHANIC FEELS ITS A HEAD LEAK OR A HOSE CLAMP NOT TIGHTENED.HOWEVER I FEEL ITS A FUEL FILTER.THIS WAS VERY HELPFULL.THANK YOU"

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1 Answer

P1273 Manufacture contr fuel air metering 2004 nissan sentera


P1273 Nissan P1273 Nissan - Air Fuel Ratio Sensor 1 Lean Shift Monitoring Bank 1 Possible causes
- Faulty Air fuel ratio (A/F) sensor 1 Bank 1
- Faulty Air fuel ratio (A/F) sensor 1 heater Bank 1
- Fuel pressure
- Faulty Fuel injector
- Intake air leaks
- Faulty Air Flow Meter
Most probable is you have a bad heater in your upper bank 1 O2 sensor. Replace all of your O2 sensors.

Read more: http://engine-codes.com/p1273_nissan.html#ixzz3lgP7CTD8
Read more: http://engine-codes.com/p1273_nissan.html#ixzz3lgOwiMU8

Aug 27, 2015 | 2004 Nissan Sentra 1.8

1 Answer

What does code system to lean bank 1 mean on my 2000 lexus rx300


It could be caused by many things, but generally it means that your engine is running too lean - usually indicating a vacuum leak. It could also be that the O2 sensor is bad and giving a false reading.

Apr 10, 2014 | 2000 Lexus RX 300

1 Answer

It saids p0107


i would say thats your o2 sensor on the right side there might be 2 of them not sure on a vw but the o2 sensor will cause it to run lean

Dec 09, 2012 | 2001 Volkswagen Beetle

1 Answer

Where's the flow-mix sensor in a 99 Honda Passport ??


I don't know the term flow mix sensor but running lean bank 1 & 2 sounds like oxygen sensors in the exhaust as they are reading how well your engine is burning the air fuel mixture going into your engine. But I would 1st look for a split or loose clamp on your intake tube after the airflow meter as this will allow more air into the engine than is being metered my the airflow sensor causeing it to run lean.

Jun 04, 2012 | 1999 Honda Passport

1 Answer

2007 entourage code p2187 p2189 p0171 p0174 keeps coming on cleaned mass air flow sensor with crc cleaner dont see any vacuum leaks ????help?


Here is two of your codes. Lean mixture on banks 1 and 2. There are 37 pages of Hyundai codes.

http://www.autocodes.com/p0171_hyundai.html

P0174 HYUNDAI - System Too Lean Bank 2

Read more: http://www.autocodes.com/p0174_hyundai.html#ixzz43IA8HGCb

P2187 HYUNDAI - System Too Lean At Idle Bank 1. P2189 will be Bank 2 at idle.

Read more: http://www.autocodes.com/p2187_hyundai.html#ixzz43IASlusU

Check all the bolts holding the plenum, and anything else concerned with air intake. Too much air means weak mixture.

Feb 05, 2011 | 2008 Hyundai Entourage

1 Answer

The code reads lean condition bank 2 it is a 6 cylinder what does that mean


This means cylinders 4 5 6 are running too lean and can be caused by a faulty co2 lambda sensor. Bank 1 are cylinders 1 2 3

Dec 26, 2010 | Jeep TJ Cars & Trucks

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I have a gmc envoy & the trouble codes are p0107,p0130,p0135 & p0171 can you tell me what the problem can be.


P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

P0130 02 Sensor Circuit Malfunction (Bank I Sensor 1)

P0135 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P0171 System too Lean (Bank 1)

Check your Manifold Absolute Pressure Sensor, and it might be a good time to install a new Upstream O2 Sensor.

It might also be beneficial to have your fuel pressure checked if the engine is really running Lean, but this may be caused by a faulty O2 sensor.

Jul 19, 2010 | GMC Envoy XL Cars & Trucks

1 Answer

My bmw 745i reads system too lean on bank what could this possibly mean


If you have a lean code on just one bank, it usually means the oxygen sensor on that side is bad. On rare occasions, it could indicate an actual one side lean condition. Only way to tell for sure is to have the oxygen sensor tested. If it is fine, you may have plugged fuel injectors on that side.

Jun 12, 2009 | 2002 Nissan Altima

1 Answer

Don't know what system lean bank means.


hi it means you have a lean fuel/air ratio on the cylinders on that side of your engine look for air leaks [hoses gaskets loose manifold bolts etc yates210456

Oct 19, 2008 | 1996 Plymouth Neon

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