CHECK REAR OXYGEN SENSOR DATA.

1) Warm up the engine until engine coolant temperature is higher than 75°C (167°F), and keep the engine speed at 3,000 rpm. (2 minutes maximum)

2) Read the data of rear oxygen sensor signal using Subaru Select Monitor or general scan tool.

NOTE:

Subaru Select Monitor

For detailed operation procedures, refer to “READ CURRENT DATA FOR ENGINE”.

General scan tool

For detailed operation procedures, refer to the general scan tool operation manual.

QUESTION

Is the voltage 490 mV or more?

Yes No