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P2096 post catalyst fuel trim bank 1 system too lean

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Posted on Jan 02, 2017

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SOURCE: service engine soon light on, says bank 1 and 2 lean

this code sets when more air is entering the system than is designed to. the computer is having to overcompensate by adding more fuel. usually this code is associated with a vacuum leak, either a vacuum hose or a leak at the throttle body gasket, intake gasket, or another gasket on the intake manifold. if your vehicle has a mass air flow sensor (as opposed to a MAP sensor) a dirty or faulty mass air can cause both banks to be lean

Posted on Feb 20, 2010

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1 Answer

Vehicle CEL is on, various codes


P0300 is a random miss fire , a vacuum leak can cause this as well as low fuel pressure ! weak fuel pump , clogged fuel filter !
DTC P0171: Fuel Trim System Lean Bank 1
DTC P0174: Fuel Trim System Lean Bank 2 These two codes are saying the PCM - engine computer is see a lean condition .
DTC P0191: Fuel Rail Pressure (FRP) Sensor Performance
Circuit/System Description
The fuel pressure sensor is located on the fuel line. The fuel pressure sensor monitors the fuel pressure in the fuel line. The fuel pump flow control module (FPCM) monitors the voltage signal from the fuel pressure sensor.

You don't say what make , model an year vehicle ! These are for GM vehicles , yours could mean something else . Except the first three , those are genaric codes , same for all makes ! So can't say what this codes are P2097, and P2099 ! Can't mean this P2097 - Post Catalyst Fuel Trim System Too Rich Bank 1
P2099 - Post Catalyst Fuel Trim System Too Rich Bank 2

Sep 03, 2016 | Cars & Trucks

1 Answer

I have an 08 Saturn Astra XR. It won't come out of 1st. Throwing code p2096 post catalyst fuel trim system too lean bank 1. Put on new o2 sensor on both streams and I cleaned out mass air flow. Help?


That code wouldn't cause it not to come out of first gear . How did you retrieve this code P2096 , code reader etc.. This is an invalid code , not listed in Saturn service information . Have DTC'S check by a GM dealer , Chevy . You obviously have a transmission problem not an O2 sensor problem . Some code readers will replace a code with an other if it doesn't have the right one . Software .

Jun 21, 2016 | Saturn Cars & Trucks

1 Answer

P2096 engine code


1st google hit.
P2096 Suzuki - Post Catalyst Fuel Trim System Too Lean
to see this steps read the FSM. it covers this.
lots of tests. not guessing.
Low fuel pressure
- Misfire condition
- Large vacuum leak
- Air leak near sensor
- Plugged catalytic converter
- Lean air/fuel ratio
- Faulty front O2 sensor


Jul 01, 2014 | 2007 Suzuki Swift 1.3

1 Answer

P2096


Hi there:
DTC P2096 - Post Catalyst Fuel Trim System Too Lean (Bank 1)

Lean mixture code could be caused by a leakage in the rubber boot that is between the throttle body (similar to a carburetor) and the air cleaner housing. Following are all the tests to be done for a vehicle other than yours... HERE.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Jul 11, 2012 | 2005 Hyundai Accent

1 Answer

2006 subaru impreza wrx. has a p2096 code. what does it indicate? also is there a way i can clear a check engine light?


This is Subaru's definition for this code... DTC P2096 POST CATALYST FUEL TRIM SYSTEM TOO LEAN BANK 1; check this diagram about muffler assembly...

zjlimited_2006.jpg

Oct 09, 2011 | 2006 Subaru Impreza

1 Answer

How do I turn off the service engine code in my 2005 hyundai accent ..code p2096


The code.... P2096.... Post Catalyst Fuel Trim System Too Lean, Bank 2... If this has been repaired you can turn off the light with a scanner tool.....

Feb 12, 2010 | 2005 Hyundai Accent

1 Answer

P2096 Engine Code for a 2005 Caravan


P2096=Post Catalyst Fuel Trim System Too Lean Bank 1,
drivers side was too lean at one time and set code,You should hhave the code erased and see if it returns again,

Dec 28, 2009 | 2005 Dodge Caravan

1 Answer

2004 or 05 Jeep Wrangler dtc P2096 (Post catalyst fuel trim bank 1 to lean). It set the mil lamp and then reset it self. Pulled the code with a scanner and found 1 of 2 to be P2096 and 2of 2 to be P2096...


Here is more information about P2096
P2096-DOWN STREAM FUEL TRIM LEAN BANK 1

WHEN MONITORED 
With the engine running in closed loop mode, the ambient/battery temperature above (-7°C) 20°F , altitude below 8500 ft and fuel level greater than 15%.

SET CONDITION 
If the PCM multiplies short term compensation by long term adaptive and a certain percentage is exceeded for two trips, a freeze frame is stored, the MIL illuminates and a trouble code is stored. Two Trip Fault. Three good trips to turn off the MIL.

Here are some possible casuses:
Exhaust leak
Engine mechanical problem
02 sensor
02 signal circut
02 return circut
Fuel contamination

Good luck and hope this helps. 

Jun 21, 2009 | 2006 Jeep Wrangler

2 Answers

Repair codes P2096 and P0137


P2096= Post Catalyst Fuel Trim System Too Lean

P0137= O2 sensor voltage low bank 1 sensor 2

Mar 11, 2009 | 2006 Chrysler Sebring

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