OBD-II systems have only one O₂S (oxygen sensor)in the exhaust system, located after the catalytic converter (downstream).

Name: OBD-II systems have only one O 2 S (oxygen sensor)in the exhaust system, located after the catalytic converter (downstream).
Brand: Quizplus
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Question

Quizplus · Accepted Answer

OBD-II systems can have multiple oxygen sensors, both before (upstream) and after (downstream) the catalytic converter, depending on the vehicle's engine and exhaust system design.

OBD-II Systems Have Only One O2S (Oxygen Sensor)in the Exhaust

OBD-II Systems Have Only One O₂S (Oxygen Sensor)in the Exhaust