I have a 2002 WRX Wagon that I just purchased used. It has a P0031 code which says it is a HO2s Bank 1 Heater Circut Low.
I can not find the Oxygen Sensor.
Question, what side of the car is Bank 1. Driver or Passenger?
Where is the O2 sensor locater?
I have a repair manual on order, but have some time next week and would like to get the thing replaced.
Any help, pictures, extc would be appreciated.