DTC E9 Side Sensor Bus RH Communication Error
WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Refer to DTC EC for details on DTC E9. < Refer to
DTC EC SIDE SENSOR BUS RH COMMUNICATION ERROR , Diagnostic Chart with Trouble Code. >