PD36: Front Bank Short Term Fuel Trim

Display shows counts from zero to 255. Normal integrator count position is 128, indicating engine is operating normally. A count greater than 128 indicates time is being added to injector pulse width, increasing amount of fuel to engine. A count of less than 128 indicates time is being subtracted from injector pulse width, reducing amount of fuel to engine to compensate for a rich condition sensed at front oxygen sensor.