Check Engine Light

[sweetie6485]

Hello-
I am new to the forum, but i have had my Sonic since 2013.

I have a 2012 Sonic LT.

I have been getting an error code PO171, can anyone give me an insight into what i should look into replacing/fixing in my car?

Thank you!

 

[Breezybro]

http://engine-codes.com/p0171_chevrolet.html

P0171 Chevrolet - Fuel Trim System Lean Bank 1

Possible causes
- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection

What does this mean?
If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replaced the air filter and clean the air flow meter. If the problem persist the front oxygen (O2) sensor may need to be replaced.
The P0171 code could also be caused may be caused by one or more of the following: debris on MAF sensor causing an incorrect reading, improper oil level, low or high fuel pressure or Engine Control Temperature (ECT) Sensor reading inaccurate.

 

[Yosemite Sam]

Welcome to the family sweetie6485!! That code could possibly be caused by the flexible hose going from the throttle body to the air cleaner (picture attached).



:banana:

 

[Palmaris]

^ I would bet on this as well.

 

[sweetie6485]

Would I be able to get this hose from Auto Zone, Advanced Auto Parts, or O'Reileys?

 

[jgrote]

Not a direct replacement, but it happens enough that most dealership parts departments will have it in stock. It's also available on the internets. It's called an outlet duct and the pt# is 95489808.