Question about 2010 GMC Acadia

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Achetwmlut2ofkjww code p2099

I have a p2099 code

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Check for dirty gas or a loose exhaust flange

Posted on Jan 10, 2015

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Posted on Jan 02, 2017

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1998 Ford Econoline has code p2099 what does it mean


code p 2099 refers to post cat converter fuel trim (FT) bank 2 --too rich===causes --catalytic converter
it also refers to engine coolant temperature (ECT) sensor --- circuit malfunction=== causes --- wiring-- ECT sensor
bump the cat converter with the heel of your hand and if it rattles replace the cat converter
if the cat converter is solid , replace the ECT

Sep 04, 2016 | 1998 Ford Econoline

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

DTC P2099, how do I tell if this is historic?


Code cleared & came back=Current code/problem IS present.....Next step;Fault tracing,time for a pro !!

Mar 19, 2015 | Cars & Trucks

1 Answer

2008 CTS Cadillac 3.6 stick ,have 2 po430 code 02S and EVA, put a new cat on old one was empty checked every thing was told cat,out on new now has 2-430


Sounds like you need a reputable mechanic with a good code reader to check it out. It could be an O2Sensor, I would almost bet on that one, but could be many other sensors as well. O2 sensors emit low voltage signals and if one is weak or bad it will act like the Cat is bad. make sure the wires are plugged in all the way, possibly one is loose from when they installed the new cat. Hope this helps. Hard to diagnose with out the vehicle here to hook up my code reader to.

Oct 31, 2014 | 2008 Cadillac Cts

1 Answer

P2099 fault code


The most common concerns we have seen have been related to fuel injectors.
This should be caught on initial diagnosis for these codes.
Perform injector balance or AFIT test prior to going further.
Note: Fuel injector balance test not available on 2009 Acadia, Outlook, Enclave and Traverse.
If normal diagnostics does not lead to a resolution for this code, then look for a small leak in the exhaust, usually at the outlet to the engine converter.
This leak will allow air to be pulled into the exhaust and cause a false lean concern at the post O2 sensor.
To diagnose this leak we recommend applying air to the rear of the downstream converter or to the tail pipe on single systems @ 5psi to 8 psi.
Apply a soapy solution to the gasket areas and the O2 boss.
Leaks in these areas that will cause the code will be larger bubbles

Apr 04, 2014 | 2009 Chevrolet Traverse

1 Answer

P2099 what does that mean


it took you longer to tye the question than it would have for you to just google P2099

Nov 26, 2013 | 2007 Cadillac CTS 3.6L

1 Answer

What does the code p2099 means on a cadillac cts


P2099 code keeps coming on and off what could be the the problem

Apr 25, 2012 | 2003 Cadillac CTS

1 Answer

Have a 2003 cadillac cts, while driving an oil line ruptured burning through a wire harness, now car will not start, lights chk good, power seems fine, have numerous codes from obd2 tester: 02105, P0742,...


Wow, sounds like splicing time, have to get the the area where the harness was damaged and repair it - disconnect the battery, buy some 14 and 16 gauge wire of various colors, and some **** connectors or better yet, a soddering gun and shrink tube and fix them one by one-when you get it done, and hook the battery back, your scanner will let you know shortly if you have any issues.

Or you could go to town to and replace the entire harness, but that is usually easier said than done, no matter what, you have your work cut out for you (plus you have to fix the ruptured oil line too). Good luck

Apr 19, 2011 | Cadillac CTS Cars & Trucks

1 Answer

2004 dodge dakta 4wd 3.7 errorcode p2099, whats it mean


CODE P2099 IS DOWNSTREAM FUEL SYSTEM 2/2 RICH.POSSIBLE CAUSE EXHAUST LEAK - ENGINE MECHANICAL PROBLEM - O2 SENSOR NO 2/2 HAS FAILED OR SIGNAL CIRCUIT OR RETURN CIRCUIT PROBLEM. FUEL CONTAMINATION.

Jun 06, 2010 | 2004 Dodge Dakota

1 Answer

Sprinter has low power and we are getting code p2099.What should we look for?


Check for turbo resonator, its common problem. Located near turbo

Apr 24, 2009 | 2004 Dodge Sprinter

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