Analyte sensor with impedance determination

A method of operating an analyte sensor, comprising:

• applying a first bias voltage to the analyte sensor, the first bias voltage less than an operational bias voltage of the analyte sensor;
• measuring a first current at the analyte sensor when the first bias voltage is applied;
• applying a second bias voltage to the analyte sensor;
• measuring a second current at the analyte sensor when the second bias voltage is applied;
• detecting a plateau bias voltage using the first current and the second current;
• determining that the plateau bias voltage is less than a plateau bias voltage threshold;
• and
• executing a responsive action at the analyte sensor.

An analyte sensor system, comprising:

• an analyte sensor comprising a working electrode and a reference electrode;
• and
• a hardware device in communication with the analyte sensor, wherein the hardware device is configured to perform operations comprising:
• receiving an analyte sensor current signal generated by the analyte sensor, the analyte sensor current signal indicative of an analyte concentration in a host;
• determining that the analyte sensor current exhibits a rate of reduction greater than a rate of reduction threshold;
• determining that a membrane impedance meets a membrane impedance condition;
• and
• executing a compression low response action.

A method for monitoring an analyte concentration in a host using an analyte sensor, the method comprising:

• receiving an analyte sensor current signal generated by the analyte sensor, the analyte sensor current signal indicative of the analyte concentration in the host;
• determining that the analyte sensor current exhibits a rate of reduction greater than a rate of reduction threshold;
• determining that a membrane impedance meets a membrane impedance condition;
• and
• executing a compression low response action.