Heated oxygen-sensor, rear (593)

Type		Bosch LSF 4.7 With electrical preheating
Power, preheating	W	approx. 7
Control range	V	0-1
Resistance at 20°C (68°F) pins 1- 2	Ohm	ca 9 (PTC)

Pins 3 and 4 are gold plated.

Note
The connector must not be treated with any sort of contact cleaner.