Heated oxygen sensor 1, before catalytic converter (592Fa)

Fig 1: Identifying Heated Oxygen Sensor 1

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 2: Heated Oxygen Sensor 1 Voltage Graph

Courtesy of SAAB-SCANIA OF AMERICA, INC.

TECHNICAL DATA - HEATED OXYGEN SENSOR 1

Location		In front of catalytic converter
Type		Bosch LSF 4.7 With electric preheating
Rating, pre-heating	W	approx. 7
Control range	V	0-1
Resistance at 20 °C (68 °F) pins 1- 2	Ohms	approx. 9

Pins 3 and 4 are gold-plated.

NOTE: The connector must not be treated with any kind of contact cleaner.