Question about Cars & Trucks
I Have A Po171 Code on my buick rendezvous what is wrong
Posted by Anonymous on
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Here are some possible causes, I would start with anything related to replacing the intake.
Air leaks in intake manifold, exhaust pipes or exhaust manifold
Fuel control sensor is out of calibration
Low fuel pressure (fuel filter clogged, pressure regulator failure)
One or more injectors restricted or pressure regulator has failed
O2 sensors contaminated, deteriorated or has failed
Vacuum hose is disconnected, broken, leaking or loose
Posted on Jan 28, 2009
Code PO171- Lean mix of Bank 1.
Code PO174- Lean mix of Bank 2.
Most of the time a P0171 and P0174 is caused by either a vacuum leak--more than likely the PCV hose and valve or a dirty or defective Mass Airflow (MAF)sensor. Low fuel pressure can also cause this condition. The PCV hose is located on bank one but can affect both sides because the other end is located on the back of the upper intake manifold. Usually they deteriorate and get a hole in it.
Clean the the MAF sensor with MAF cleaner, which you can pick up at any Auto parts store and also pick up a bottle of fuel injector cleaner. Good luck and hope this helps.
Posted on Nov 16, 2009
Tips for a great answer:
Sep 18, 2014 | Cars & Trucks
Sep 07, 2013 | 2002 Buick LeSabre
Nov 12, 2011 | 1998 Buick LeSabre
Jul 06, 2010 | 1999 Ford Taurus
May 15, 2010 | 2000 Buick LeSabre
Jun 06, 2009 | 2003 Buick Rendezvous
Apr 12, 2009 | 1996 Ford Ranger SuperCab
Sep 25, 2017 | Cars & Trucks
164 people viewed this question
Usually answered in minutes!