An air/fuel ratio sensor is different from an oxygen sensor in that ______.
A) the signal output is a varying current (amps)
B) as the mixture becomes leaner, its output signal increases
C) the output responds to minor changes in air/fuel mixture, not just rich/lean conditions
D) all answers are correct

Question

Quizplus · Accepted Answer

An air/fuel ratio sensor provides a varying current output, increases its signal as the mixture becomes leaner, and responds to minor changes in the air/fuel mixture, unlike a traditional oxygen sensor which only indicates rich or lean conditions.

An Air/fuel Ratio Sensor Is Different from an Oxygen Sensor