"Sensor Heater Management
Due to the high operational temperature of the sensing element of the LSU sensor, complex application specific heater element control
strategies are used to control sensor temperature across various operating conditions. These strategies are used to avoid sensor damage
caused by thermal shock resulting in premature sensor failure. The heater supply voltage must be controlled, so that the temperature of
the sensor is kept at a nominal temperature of approximately 750C."
I knew that running the engine with it off was bad, however I did not pick up on...
"• Never switch on the sensor heating control unit before engine start."
I have always switched mine on first which I now know is bad (may cause thermal shock) - my last reading was a bit suss so I will check I haven't killed anything
