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P0171 System too lean BANK 1What's your problem?

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: I am getting code P0171 system to lean, bank 1 ??

Bank 1 is the cylinder bank that has #1 in it. In your case I believe it is the cylinder bank at the front of the car, number 1 cylinder is to the far left looking at it from the front. The system lean condition could be caused by a leaking intake manifold gasket or a simple O2 sensor that is reading just out of range but not enough to trip a code for a faulty sensor.

Posted on Jan 16, 2009

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keithheavili
  • 410 Answers

SOURCE: got code p0171 system too lean (bank 1)

This is probably referring to problems with your bank 1 oxygen sensor.  Without the vehicle make, model and year I can't tell you where it is located.  However, if you replace your front oxygen sensor that should clear up the problem.  Also, if you do replace it, I always run some fuel injector cleaner through a full tank of gas at the same time.  Hope this helps!

Posted on May 17, 2009

fknstart
  • 404 Answers

SOURCE: check engine light p0171 system to lean bank one,

o2 sensor replace them

Posted on Jun 13, 2009

pumpkinman
  • 1144 Answers

SOURCE: 98 chevy s-10 codes p0131, p0171, and p1133

http://www.obd-codes.com/
go there look up the codes there all there

Posted on Sep 24, 2009

  • 1129 Answers

SOURCE: codes P0171, P0174, P0440

This is usually an oxygen sensor, replace the O2 sensor located above the catalytic converter before replacing the evaporator purge canister.

Posted on Dec 29, 2009

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98 dodge ram 1500 5.9L 2wd codes P0300, P0301, P0302, P0303, P0171. What all do I need to do to resolve??


the p0300--p0301-p0302=p0303 are misfire codes and can mean needs tune up or wiring problem and p0171 is system to lean bank 1 with this code if you correct it will probably correct the misfire codes your receiving
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1 Answer

Im getting P0171 code- lean .


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2 Answers

What does P0171 system to lean bank 1 mean on my 2000 Lexus RX300?


Try this little cheap trick, happens all the time

Apr 10, 2014 | 2000 Lexus RX 300

1 Answer

Engine light on


P0171 ; Fuel Trim System Lean (Bank 1)
P0174; Fuel Trim too Lean (Bank 2)
fuel trim is system to modify injector pulse if system go lean it will go rich when the system is too much lean and is max.rich it code
look for 02 sensor bank 1 and 2 data
hope it helps

Mar 31, 2014 | 2003 Chevrolet Malibu

1 Answer

Engine check light on error code 1 is P0171 system too lean bank 1 error code 2 is P0174 system too lean bank 2


P0171 system too lean bank 1
P0174 system too lean bank 2
links to information on the codes

it means that the O2 sensors in your vehicle detected a lean condition in their respective banks. this could be caused by a dirty MAF (mass air flow) sensor or a vacuum leak downstream from the MAF sensor

sometimes you can clean the MAF with electronics cleaner or brake cleaner but be sure to take it off the vehicle first. be careful not to damage the MAF while spraying the cleaner, and allow it to dry completely before installing it on the vehicle.

May 21, 2011 | 2001 Jaguar S-Type

2 Answers

P0313;Misfire Detected with low fuel P0171-System too lean{bank1} P0174 System too lean{bank2} drive cycle


P0313 - Misfire Detected with Low Fuel
P0174 -System too Lean (Bank 2).
P0171 -System too Lean (Bank 1).

P0171 and P0174 mean "system too lean" for banks 1

Aug 24, 2010 | 2000 BMW 3 Series

3 Answers

2003 Ford Ranger 4x4 extended cab- diagnostics checked and got these codes- P0171, P0174, P0300, P0316. Can you tell me what they mean?


P0171------ system too lean bank#1
Po174------ system too lean bank#2
For these 2 codes, try cleaning the maf sensor (mass air flow), that is mounted in the big black hose that goes from the air filter housing to the throttle plate, if it is dirty, that will cause those 02 sensors to send a signal to the computor to lean the air fuel mixture. If cleaning it doesn't work, the sensors will probably need changing.
P0300---- Random/multiple cylinder misfire
P0316---- Cylinder misfire at start up---- first 100 revolutions.
On those 2 codes, you have to do some testing to find out why there is a misfire.
Possible causes:
dirty/malfunctioning injectors
weak coil pack
fowling spark plugs/wires
Low fuel pressure

May 11, 2010 | 2003 Ford Ranger Regular Cab

2 Answers

Diagonostic trouble codes reported p0171 p0174 p0302 2001 Taurus, only reports P0171


P0171 is system too lean bank 1, P0174 is too lean bank 2, and 302 is misfire bank 1. Look for vacuum leaks. If you don't find them, put a vacuum gage on it can check. The P0171 is almost always a vacuum leak. If not other possibilities are front O2 sensor is too old and should be replaced (if mileage is greater than 100k then replace). Try injector cleaner. Misfires are usually bad spark plugs, but could possibly be caused by insufficient fuel. I've never had a car of mine in bad enough shape to have that error.

Sep 14, 2008 | 2001 Ford Taurus

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