Question about 1996 Volvo 850
P0171 indicates a lean condition. The most common cause of this is a defective mass air flow sensor. Also check if any vacuum leaks.Replace MAf sensor,if cleaning the MAF does not help.
OBD II P0172 Fuel System Too Rich (Bank 1).P0172 - System Too Rich (Bank 1) Essentially this DTC means that an oxygen sensor in bank 1 detected a rich condition.
When the code says that the Fuel System is "too rich," it means that the computer has been subtracting more and more fuel, which is called Long Term Fuel Trim. Ideally, the Long Term Fuel Trim should be close to 1 to 2 percent. When a code P0172 is set, it means that the Fuel Trim is anywhere from -15 percent to as low as -30 percent compensated. When this happens, the computer knows that there is an improper condition in the control of the Fuel System.
Posted on Oct 01, 2010
a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jan 27, 2016 | Cars & Trucks
Oct 25, 2013 | Cars & Trucks
Jul 27, 2013 | 2005 Mitsubishi Endeavor
Dec 17, 2012 | Cars & Trucks
Jun 29, 2017 | 1996 Ford Thunderbird LX
Oct 08, 2010 | 2001 Mercury Sable
May 15, 2010 | 2001 Nissan Sentra
Oct 21, 2009 | Chevrolet Colorado Cars & Trucks
Sep 16, 2009 | 1997 Ford F150 Regular Cab
Feb 16, 2017 | 1996 Volvo 850
Aug 15, 2014 | 1996 Volvo 850
831 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: