Long term fuel trim, Bank 2
It is not adjustable. Only the ECM can change it.
The control module receives information from the heated oxygen sensor (HO2S) about the fuel/air mixture when idling at both the lower and upper part-load range - If the fuel/air mixture deviates from [lambda]=1 the short-term fuel trim will compensate for this by adjusting injection time so that [lambda]=1 is achieved. When the short-term fuel trim makes an adjustment, the integrator median must be adjusted by the long-term trim. Diagnostic trouble code (DTC) ECM-261A will be stored when the long-term trim must be adjusted to maximum in the lower part of the load area.
a boating term
I believe you may be referring to Mode 1 PID 6. "shrft1" would be an abbreviation used by the software running on your scan tool or computer presumably to deal with limited area on the display. Mode 1 PID 6 is commonly known as Short term fuel trim bank one. The short term trim indicates how much (as a percentage) the computer is enriching (positive values) or enleaning (negative values) the commanded fuel relative to how much it has recently (long term trim) needed in similar operating conditions.
The science of process of distribuiting weights (cargo, fuel, ballast, etc.) to ensure optimum trimming, and adequate stability. On a ship, trim is the difference between the forward draft and the after draft, however, when you refer to "trim and stability", the concept also refers to the concept of list (side to side inclination).
work on kia sportage 's all the time. Never heard of such. I suppose it could be computer fuel monitoring signals in relation to the throttle body sensor output which in turn leans or richens the fuel ingector mixture as you speed up or slow down.But tha is just a guess on my part.
POST CATALYST FUEL TRIM SYS TOO LEAN BANK2
It can be. It can be a reference to sex. It can also mean a haircut, as in "just a trim." The word "trim" means either slim or slender, or to make something thinner or more slender.
Trouble code P1128 means: Long Term Fuel Trim Add. Air. Bank 1 System Too Lean
No such thing as a "fuel trim sensor". Where did you come up with that? Fuel trim is a computer adjustment based on O2, MAF, ECT, TPS and other sensors.
p1151 bank fuel trim lean. need to check fuel injectors, intake system for leaks and fuel supply- fuel pressure