B2aaa code 2006 cobalt suddenly showed up. - Cars & Trucks

Question edited for clarity and add CAPS.
Question move to Cobalt category.

It is dumping extra fuel.

P0171 code SS SC - Cobalt SS Network

CobaltSS.net https://www.cobaltss.net > forums > p0171-code-ss-sc-...
Mar 1, 2014 - P0171 is a fuel trim lean code. Meaning the car is having to add more than 25% of the normally asked for fuel to reach proper O2 sensor ...

P0171 code
Jan 14, 2012
P0171 code "Bank 1 system too lean"
Nov 9, 2013
P0171 on 2007 SS/SC - Stock
Jul 15, 2009
2.2 P0171 Fix??
May 7, 2007
More results from www.cobaltss.net

For those with the FAMOUS P0171 CEL - Cobalts SS

cobaltss.com https://www.cobaltss.com > threads > for-those-with-th...
About the FAMOUS P0171 DTC (diagnostic troubleshooting code). If the PCM detect a lean condition (roughly 15% leaner than stock or more lean), this code ...

Missing: 2.0. ‎' Show results with: 2.0.

P0171 Chevy Cobalt: Fuel Trim System Lean Bank 1

700r4transmissionhq.com https://www.700r4transmissionhq.com > p0171-chevy...
Jul 28, 2018 - It indicates that your Chevy Cobalt is running lean on the bank one side. It's the most common air/fuel mixture-related code. It's not the most ...

‎Definition · ‎Symptoms · ‎Causes

TRY TO RE SET AND SEE WHAT HAPPEN ,NO MUCH INFO.

Check the fluid level in the transmission as the level may be low after it filled the cooler in the radiator. Run fault codes and check for faulty TCM

i have download picture but not seen

You must have a code reader that is CAN enabled. CTSs as early as '04 require a CAN enabled reader. the 06 cts uses a CAN OBD-II CODE READER/EOBD SCANNER. When buying the scan or code reader for your vehicle, make sure it supports the Controller Area Network (CAN) protocol. CALL THE DEALER OR AUTO-ZONE MAY BE ABLE TO TELL YOU THE PROPER NAMED SCANNER TO USE. GOOD-DAY !

Im not sure what the b2aaa is but the p0171 is bank one ( line of cylinder's that has #1 cylinder in it) is lean. This can just be a bad oxygen sensor.
I need to know more. Is the idle smooth? Is the idle at a good speed? (motor not reeving or going to slow)

i have an 06 cobalt with the same issue and when my engine light finally came on it showed up as evap system malfunctioning. This is for the emissions system. My code shown was P0440. This can be caused by a faulty or loose gas cap, a purge valve, a vent valve, or the evap canister. I am waiting on the purge valve to arrive now so should know if that takes car of mine in a week, but i have already replaced my gas cap and the problem is still there. Hope this helps you some

dealer only ,encrypted software needed to diagnose the fault

YOU HAVE AN ELECTRICAL PROBLEM WITH THE ELECTRONIC STEERING COLUMN. YOU NEED TO HAVE THE SYSTEM CHECKED FOR CODES AND GO FROM THERE.

This sounds like the anti-theft system - Are you using the original factory key? Have you tried locking the car with your remote and then unlocking it with the remote (if you have one)?