The engine is really running normally, as technician A claims.
The MIN/MAX feature of a digital multimeter is being used to evaluate an oxygen sensor. The measurements are 78 mV at the minimum, 932 mV at the maximum, and 442 mV on average. According to Technician A, the engine is running normally. The oxygen sensor, according to technician B, is tilted too richly.
At the exhaust pipe, an oxygen sensor measures the quantity of oxygen in an engine.
The powerplant is in good functioning order if the oxygen system senses oxygen at the aforementioned boundary condition.
Learn more about the oxygen sensor at
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The question is -
An oxygen sensor is being tested with a digital multimeter using the MIN/MAX function. The readings are minimum = 78 mV; maximum = 932 mV; average = 442 mV. Technician A says that the engine is operating normally. Technician B says that the oxygen sensor is skewed too rich. Which technician is correct?
