On the OBDII @ Advanced Auto, it gave me 4 errors:

DTC (Codes):

P0171
System Too Lean
(Bank 1)

DTC Pending (Codes):

P0456
EVAP Emission
Control System
Leak Very Small

P0730
Gear Ratio
Incorrect

P0410
Secondary Air
Injection System
Malfunction

Now, I have been reading the thread about the P0410 error, and at first I was told that it may be an o2 sensor (by Auto Zone), but now I'm starting to realize it's probably what everyone else on here has encountered. But the other stuff scares me, not exactly sure what the first error is, about the engine running too lean. The gear ratio I'm also scared about, though it could easily be a misfire, couldn't it? Or would it specifically say a misfire? I was told by Advanced that the P0456 Emission error is probably a loose gas cap, but it wasn't loose. Not exactly sure what to do. My car has just topped 60,000 miles and runs terrific, no problems at all. This morning, in the frigid cold, I got a tire sensor light (by the way, this is the first day I've ever had an error light come on) come on but it went away after I hopped onto he interstate and has been off since. My car is still covered under powertrain warranty, and I assume the gear ratio would be covered under that since it is the transmission but I'm not sure about the other stuff. Any advice at all would be greatly appreciated.

 

i see this is an old thread but i just got the P0171 code...what was the fix for your troubles?

 

Hey, anyone ever figure out how to solve p0171?

 

are you guys running with a tune? how many do you have on the cars?
-steve