Technician A says that an oxygen sensor produces a voltage output signal based on the oxygen content of the exhaust stream. Technician B says that if the exhaust has little oxygen the voltage of the oxygen sensor will be close to 0 volts. Which technician is correct?
A) Technician A only
B) Technician B only
C) Both technicians A and B
D) Neither technician A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because an oxygen sensor does indeed produce a voltage output signal that varies with the oxygen content in the exhaust stream. Technician B is incorrect because when the exhaust has little oxygen (indicating a rich mixture), the voltage of the oxygen sensor will be higher, not close to 0 volts.

Technician a Says That an Oxygen Sensor Produces a Voltage