Question about Land Rover Freelander
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
SOURCE: p0171 and p0174 codes
P0171 System too Lean (Bank 1)
P0174 System too Lean (Bank 2)
If a car has a check engine light on and has P0171 and P0174 codes stored, the most likely cause is a vacuum leak. These codes are set by the car’s computer when it sees too much oxygen in the exhaust. Excessive oxygen readings in the exhaust will set lean codes. This does not mean that the oxygen sensors are defective. It is a common mistake for people to replace oxygen sensors when lean codes are present. Just because the code is related to oxygen sensor readings, it doesn’t mean that the oxygen sensors are bad. If both of these codes are stored this means that both banks of the engine have excessive oxygen in the exhaust. If the oxygen sensors are replaced it’s most likely that the same codes will reappear. It is very uncommon for two oxygen sensors to fail at the same time.
Therefore the most likely cause of P0171 and P0174 codes is a vacuum leak. The source of a vacuum leak can be one of many things. The most common cause of a vacuum leak is a leaky hose. Vacuum hoses over time can become dry and brittle. The rubber deteriorates and can leak causing a vacuum loss. Many times a leaky vacuum hose can be found by listening for a hissing sound. A large vacuum leak can even make the car run rough at idle. In some cases it will not idle without feathering the gas pedal.
Posted on Sep 10, 2009
causes .bad filter,gas line leak,tank leak call dealer to find aux pump.bad gas.i had a truck i replaced the in tank fuelpump 5 times one week they were all bad. could be as simple as your gas cap? any check engine lights on?
Posted on Oct 07, 2009
Tips for a great answer:
Feb 18, 2015 | 2004 Lincoln LS
Apr 01, 2014 | Cars & Trucks
Jun 09, 2012 | Cars & Trucks
Mar 20, 2011 | Jaguar XJ8 Cars & Trucks
Feb 11, 2011 | 2004 Land Rover FreeLander
Sep 24, 2010 | GMC Yukon Cars & Trucks
Apr 30, 2010 | 2003 Land Rover Range Rover
Sep 10, 2009 | 2002 Jaguar X-Type
Aug 06, 2009 | Ford Windstar Cars & Trucks
1,355 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: