Rear Oxygen Sensor: Inspection

Measure the resistance between rear oxygen sensor terminal.

Fig 1: Measuring Resistance Between Rear Oxygen Sensor Terminal

Courtesy of SUBARU OF AMERICA, INC.

RESISTANCE REFERENCE CHART

Terminal No.	Standard
1 and 2	5.6^+0.8_{-0 6} Ω (when 20°C (68°F))