What does it mean when fuel trim is p0171?
What does it mean when fuel trim is p0171?
When a code P0171 is set, it means that the Fuel Trim is anywhere from 15 percent to as high as 35 percent compensated. When this happens, the computer knows that there is an improper condition in the control of the Fuel System.
What are the setting conditions for fuel trim malfunctions?
It is more common to see P0171, 0174, 0172, 0175 codes set with regard to fuel trim malfunctions on American cars. There is very little information on the setting conditions for a P0170, or P0173, but what information that is available almost seems to be a redundancy of the P0171,4,2 & 5 setting conditions.
What does 14 to 1 air to fuel mean?
Optimum air to fuel mixture (14 to 1) is called stoichiometric, which means: chemically balanced. The engine fuel management system is controlled by the computer and various sensors which feedback data.
How many miles does a Ford F-150 get?
11,851 Ford F-150s have provided 242.8 million miles of real world fuel economy & MPG data. Click here to view all the Ford F-150s currently participating in our fuel tracking program.
What can cause poor gas mileage on a Ford F-150?
Get some mass air flow sensor cleaner and clean it. Do not touch the sensor elements with anything, just spray them and let it dry for a few minutes and reinstall. A bad oxygen sensor can also cause poor mileage, but that will usually light up the check engine light.
What’s the gas mileage on a 2012 Ford F-150?
F150 ecoboost poor gas mileage fuel pressure f-150 ford 2… 2012 F150 ecoboost poor gas mileage with E10/E20 (approximately 12.2 and 11.6 respectively) recently switched to premium and worse if anything (less than 11 so far). About a month and a half ago dealer replaced PCV, serviced throttle body and updated software.
Which is the correct formula for gas mileage?
Equivalent fuel economy/efficiency ratings are converted and shown for all units, mpg US, mpg Imp, km/l and l/100km. mpg = miles per gallon. mpg US = miles per United States gallon. mpg Imp = miles per Imperial gallon. km/l = kilometers per liter. l/100km = liters per 100 kilometers.
