Share
Ask OBDII Question

20,112 questions

10,208 answers

626 comments

7,152 users

Top Users

Reynaldo (3815 Points)
G37driver (2875 Points)
OBDIITech (2389 Points)
milonajo1 (737 Points)
OBDtech2 (165 Points)
corvette-78 (127 Points)
knowledge 1488 (124 Points)
Samat Bekov (117 Points)
ptl (113 Points)
sabtele (112 Points)

po171 code

I have a 06 chevy trailblazer, my engine light is on,but not the service engine light, I have 2 different lights.My trailblazer runs great but i cant keep the light from coming on.I 've unhooked the neg battary post to reset the computer,but usually the next day it comes back on.I cant figure out what could be causing it?

Vehicle: 06 chevy trailblazer, 4.2 v 6
asked Aug 29, 2012 by anonymous

1 Answer

P0171 CHEVROLET - Fuel Trim System Lean Bank 1

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

There are many things that can trigger that code. We suggest starting by checking for intake leaks, dirty air filter and mass air flow (MAF) sensor.

answered Aug 29, 2012 by OBDIITech (2,389 points)
...