Jetta III L4-2.0L (ABA) (1995)
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Oxygen Sensor Relay: Description and Operation
Fuse/Relay Panel Location
Heated Oxygen Sensor (HO2S) Relay is located in position # 13 of the Fuse/Relay Panel, which is under the dash on the drivers side.
The Heated Oxygen Sensor Relay is energized by the Motronic control module as soon as an engine speed signal is received then it supplies current to
the oxygen sensor heating element.
