Driving Home From My Hour Trip Last Night My Check Engine Light Came On

Keep In Mind It Has Never Came On Before

I Have 38,300 Miles On My Car

Hahn Racecraft Catback - -12,000 Miles
Injen Cold Air Intake - -8,000 Miles

My Car Is Due For A Oil Change Its Prolly Been 4000 Or Under Maybe Over Idk
And I Always Use Mobil 1 Everytime


????????????? Suckssss

 

scan the code. no one can help you otherwise. /thread

 

I Can Use One Of Those Cheap Plug In Things Pep Boys Sells Right??

 

as long as it's obd2 compliant. mine was like 100 dollars.

 

Autozone/Advance those places will read codes for free...

 

i refer you to this thread:

https://www.cobaltss.net/forums/showthread.php?t=60160

 

ur car was probably requesting mods...lol just kidding get it scanned and then go to this thread
https://www.cobaltss.net/forums/problems-service-maintenance-69/cobalt-dtc-thread-merged-12015/

 

P0171 Fuel Trim System Lean ECM, PCM


thats the code i threw my frind plugged it in and now its gone??

 

make sure everything is tight. if it is, delete the code. many, many people get that code. if everything is tight and good to go it's because your maf is reading more air than it was programmed for. nothing to worry about.

 

if u want to fix that code get ur car reflashed by the dealership it will cost u about 110 bucks go to a dealership and ask them if they have a TECH 2 TOOL our cars have 7 upgrades so get it done once u do that u wont get that code again!

 

or you can delete it for free.

 

ok sure u can go and delete it for free but it will be a pain in the ass to do it every time just spend the money and get it done gm found the problem and get the reflash and u wont regret it

 

not so much mr man