On a poorly running engine, the wide band oxygen sensor can be quickly checked by ________.
A) disconnecting the vehicle battery
B) disconnecting the sensor connector
C) jumping the connector with a jumper wire
D) jumping the connector with a flashlight battery

Question

Quizplus · Accepted Answer

Disconnecting the sensor connector is the best choice to quickly check the wide band oxygen sensor on a poorly running engine. This will allow the technician to visually inspect the sensor and its wiring for any obvious issues or damage. Disconnecting the battery or jumping the connector with a wire or flashlight battery can potentially damage the vehicle's electronics or the sensor itself.

On a Poorly Running Engine, the Wide Band Oxygen Sensor