Question about GMC Acadia

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What s the most common repair for code p2099 on a 2011 Acadia?

Check engine light just came on today. Tank is not overfilled, and cap is tight.

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Https://www.yourmechanic.com/article/p2099-obd-ii-trouble-code-post-catalyst-fuel-trim-system-too-rich-bank-2-by-andrew-quinn

Posted on Jan 01, 2019

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Posted on Jan 02, 2017

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  • 3 Answers

SOURCE: service engine light is on code 0421

Your number 1 O2 sensor is bad replace it. this is the O2 sensor attached to your headers. Could be faulty sensor or the air/fuel ratio is offset. But replace the sensor its not running effeciently.

Posted on Jan 12, 2009

  • 1 Answer

SOURCE: 03 honda Odyssey gas smell and check engine light

I've got a '99 Oddy with the same symptom of gas odor inside and outside of the vehicle. Gas cap was secure and the level of fuel made no difference, so by process of elimination, I checked and followed the fuel lines and made sure there were no cracks that I physically could put an eye and hand on and eventually ended up at the fuel injectors and fuel rail. From there, all you need to do is remove the plastic cover plate from the intake plenum and the injectors will be exposed as well as the fuel rail. Turn the car on and wrap some paper towel over your hand like a mitten and run it over the suspected areas. You'll either find your leak there or the fuel filter located under the rear sliding doors.

Posted on Feb 05, 2009

canbruce75
  • 1776 Answers

SOURCE: I am getting a tighten gas cap message, however

The gas cap is most likely faulty. The gas cap is an integral part of the evaporative emission system. If it is not sealing or venting properly, it can affect the proper operation of this system. I would replace the gas cap and have the check engine light reset at an autoparts store. Most stores will scan/reset computer for free. Hope this helped and best wishes.

Posted on Aug 07, 2009

  • 1986 Answers

SOURCE: check engine code "P0446 Evap Control System Vent Control Circ"

Unfortunately, this code has nothing to do with the gas cap....
A code P0446 could mean one or more of the following has happened:

  • Faulty vent valve
  • Open, short or excessive resistance on Vent valve control circuit
  • Blockage of vent valve
  • Bad PCM
Here are some things you could try to fix it:
  • Replace Vent valve
  • Repair open, short, or resistance problem in control circuit
  • Repair open, or short, or resistance problem in power circuit
  • Replace PCM


Posted on Nov 17, 2009

  • 1 Answer

SOURCE: 2002 Toyota Echo Check Engine

You should get the problem code ran at a shop or auto parts store. My moms 2003 Toyota Echo check engine light came on and it had a slight misfire, I replaced all the sparkplugs about $20 and no check light.

Hope this was helpful

Posted on Nov 25, 2009

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3 Answers

My service engine lite came on right after i filled up with gas


Check the gas cap and make sure it is tight, if cross threaded or the seal is bad the light will kick on. Hope this helps.

Nov 07, 2016 | Cars & Trucks

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My check engine light came on after I failed to close gas cap tightly on my 2008 Acadia, how do I reset computer


It should reset itself after a few start/stop cyles.
If not, or you're in a hurry, find the ECM fuse and pull it out, wait a few seconds and replace it.

Sep 07, 2014 | 2008 GMC Acadia

1 Answer

Check Engine Light On, Accompanied by the Gas Cap Warning Light


I'm not sure what you mean by "kick". But the gas cap light will not affect the performance of the engine or transmission.
I would recommend having the computer scanned for trouble codes next.
The gas cap light means the computer has found a vac leak in the venting system for the gas tank and it could be allowing fumes into the air. The most common reason is the gas cap has been left off or is not tight. But if you have replaced it the problem is elsewhere in the venting system. The trouble code stored for the check engine light would point a mechanic in the direction of the actual problem.

May 10, 2013 | 2001 Ford Taurus

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Howdy; got a 2001 lexus es300. this morning my check engine and trac off lights remained on when I headed out for church. The problem still persists. I do not have an owner's manual, so just what...


This may sound wierd, but by any chance did you just fill the gas tank? if so did you overfill it? Please clean around the cap and tank and tighten the cap back on the filler. Apparently, if you don't replace the gas cap correctly and tight enough this can cause the 'trac off' light to come one. It will go off a little while after the cap has been replaced correctly. If this does not clear the lights then It could be other issues with the drive train and you need to get the code pulled from the car to narrow it down. Autozone will pull the code from your car for free. I am hoping it is the gas cap, cause I see alot of these.

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P1456


code P1456 set when there's small leak in the fuel tank system.
Most known reason for P1456:
-Didn't tight fuel cap on until it click for more that 3 time after fueling up and drove the car too long with cap loose.
-or a bad gas cap.
I'll try tighting the gas cap.
clear check engine.
if code come back, replace gas cap and clear check engine light again.

Dec 15, 2010 | 2001 Honda Odyssey

1 Answer

Check engine light came on after fueling


please check that your gas cap is on properly and tight, if it is loose it will set a code and the check engine light will illuminate. it is also possible if you overfill the tank it will set a code - when the pump kicks off the first time, do not add anymore. if the car is running properly, i would not expect poor gas or such. good luck!

Jun 30, 2010 | 1998 Volkswagen Beetle

2 Answers

Check Gas Cap alarm comes on and engine light is on


You gas cap is not on tight enough to seal causing the Check Engine Light to come on. When you tighten your gas cap you need to tighten it until it clicks at least 5 times, if it is tight than the seal on the gas cap may be bad. Replace with a OEM GM gas cap or a quality replacement that meets OEM specs.

Jun 16, 2010 | 2004 Pontiac Grand Prix

2 Answers

Check engine light came on Tuesday afternoon, after I filled the gas tank on Monday afternoon. If the check engine light came on because of the gas cap not being on tight enough, do I just tighten the gas...


Check engine light might have came on because of loose gas tank cap, but it's a good idea to read the code and check if it's not something else, you can take your car to an Auto Zone and they read the code for free and tell you the cause also. But if you want to reset the check engine light, only way is to disconnect the battery terminals and let it set overnight, check engine light will be reset. Hope it helps and let me know if you need more advice. Please don't forget to rate the answer it helps with my ratings, thanks!

Apr 28, 2010 | 2002 Chrysler Town & Country

1 Answer

Can I replace my gas cap?


I think you may be overfilling your gas tank. If you do this, petrol can get down the vapour lines to the charcoal cannister under the hood causing it to become saturated. This in turn would set off the cannister purge sensor and cause the check engine light ot come on. Try filling your tank only to the first click-off.

Apr 20, 2010 | 2004 Honda Accord

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