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Title: Technician A says the OBD-II (On-Board Diagnostic) system monitor compares the relative activity of ... Post by: Nica on Nov 18, 2019 Technician A says the OBD-II (On-Board Diagnostic) system monitor compares the relative activity of a rear oxygen sensor to the pre-catalytic oxygen sensor to determine catalytic converter efficiency. Technician B says catalytic converters can be tested for restriction and for efficiency. Who is right?
▸ Technician A ▸ Technician B ▸ Both technicians ▸ Neither technician Title: Technician A says the OBD-II (On-Board Diagnostic) system monitor compares the relative activity of ... Post by: mnp2357 on Nov 18, 2019 Content hidden
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