Does the oxygen sensor require maintenance?
The oxygen sensor encloses an electronical galvanic cell which offers excellent properties in terms of performance, reliability, stability, with a long life time. The cell is not affected by background gases and compatible with acids. Being autonomous, it only requires minimal maintenance. There is no electrolyte hence no requirement to replace it ; nor electrodes, hence no requirement to clean them.
The cell calibration (air or standard gas calibration) is easily performed through the intuitive user interface with calibration validation and direct diagnosis.