METHODS AND SYSTEMS FOR ADJUSTING HEATER POWER OF AN OXYGEN SENSOR TO REDUCE DEGRADATION FROM WATER

Methods and systems are provided for adjusting heater power of an oxygen sensor. In one example, a method for an engine includes adjusting heater power of a heating element of the oxygen sensor when the heater power increases by a threshold amount. The method includes subsequently increasing heater power back to a baseline power level responsive to a temperature of the heating element.