Share
Ask OBDII Question

19,641 questions

10,015 answers

626 comments

6,372 users

Top Users

Reynaldo (3715 Points)
G37driver (2776 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)

What would be the cause of code P0171 & P0174 in a 2003 Chevrolet Suburban 2500?

Vehicle: Chevrolet Suburban 2500 2003
asked Jan 13, 2012 by anonymous

1 Answer

Visit this page:

It seems to be a generic error and is not only for my car.

http://www.answergem.com/cars/q/246609/2002-land-rover-freelander-have-code-p0171-p0172-only-changed-in

 

If the issue is on both banks, check the maf sensor (air flow meter) out puts. If the maf is reading wrong then you will get a lean condition on both banks. That is where I would go next.

I solved these errors replacing the MAF, but it may be a lot of things from vacuum leaks to fuel filter, air filter, lambda sondes and injectors.

Renald
answered Apr 21, 2012 by anonymous

Related questions

1 answer
624 views asked Aug 16, 2012 by anonymous
...