C 230 (202.023) L4-2.3L (111.974) (1998)
The purpose of the O2 sensor heater is to rapidly heat up the O2 sensors to their operating temperature while preventing damage to the ceramic material
as a result of controlled heating power.
The sensor heater is actuated by the engine control unit through ground. The performance of the sensor heater at operating temperature amounts to:
18 w on Engine 104, 111, 119, 120 and 112, 113 with ME2.0