P2197 FIAT Oxygen Air/Fuel Sensor Signal Stuck Lean Bank 2 Sensor 1 P2197 FIAT 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 Citroen Vehicle:Fiat 500,Fiat Bravo,Fiat Croma,Fiat Grande Punto,Fiat Idea,Fiat Weekend,Fiat Panda