O₂

Acronym for Oxygen

O2S-11

Acronym for Oxygen Sensor Signal (Bank 1)

O2S-21

Acronym for Oxygen Sensor Signal (Bank 2)

O2 sensor

A device that detects the amount of oxygen in the exhaust stream and sends that information the ECM. Also called an Oxygen sensor or an Exhaust oxygen sensor

O3

See

• Ozone

OAC

Acronym used by car dealers to indicate on approval of credit.

OASIS

Acronym for Ford Motor Company Online Automotive Service Information System

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