P2197 Subaru Oxygen Air/Fuel Sensor Signal Stuck Lean Bank 2 Sensor 1 P2197 Subaru Oxygen Air/Fuel Sensor Signal Stuck Lean Bank 2 Sensor 1 Tech description Symptoms – Engine Light ON (or Service Engine Soon Warning Light) – Excessive Fuel Consumption Subaru Vehicle:Subaru Forester,Subaru Impreza,Subaru Legacy,Subaru Outback,Subaru Tribeca,