Question about Cars & Trucks
System too lean
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.
New users get to try the service completely Free afterwhich it costs $6 per call 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
Bank one is toward the front of the vehicle. Sounds like the heated oxygen sensors have gone bad. The Oxygen Sensors are located in the exhaust pipe and require a special socket to remove and replace.
Posted on Jan 16, 2009
P0171 is system too lean bank 1, P0174 is too lean bank 2, and 302 is misfire bank 1. Look for vacuum leaks. If you don't find them, put a vacuum gage on it can check. The P0171 is almost always a vacuum leak. If not other possibilities are front O2 sensor is too old and should be replaced (if mileage is greater than 100k then replace). Try injector cleaner. Misfires are usually bad spark plugs, but could possibly be caused by insufficient fuel. I've never had a car of mine in bad enough shape to have that error.
Posted on Oct 24, 2008
A code P0174 may mean that one or more of the following has happened:
Posted on Oct 24, 2009
SOURCE: diagnostic code #'s p0174,p0171
oxygen sensors are telling you that the mixture is too poor on ur sistem need to check its behaviour and see whats causing that lean mixture
hoope this helps
Posted on Nov 10, 2009
Tips for a great answer:
May 03, 2011 | Ford Taurus Cars & Trucks
Trouble code P0174 means: Fuel System Too Lean (Cylinder 2 bank
Mar 15, 2011 | 1997 Ford Expedition
Jan 30, 2011 | 2001 Ford Taurus
Dec 12, 2010 | 2001 Ford Taurus
Nov 15, 2010 | 2001 Ford Taurus
Sep 28, 2010 | 1999 Ford Taurus
Sep 17, 2010 | 2001 Lexus RX 300
Jun 08, 2010 | 2000 Ford Taurus
Sep 14, 2008 | 2001 Ford Taurus
180 people viewed this question
Usually answered in minutes!