P38A Nanocom code 1190 Oxygen Sensor Heater Circuit Low Resistance

Evening All,

Whist doing some diagnostics on my GEMS 4.6, I notice I have an error code 1190 Oxygen Sensor Heater Circuit Low Resistance. Can't find much about it with Googling, but is this probably a defective O2 sensor? I don't have a MIL light or anything. The engine is running sweet as anything. I suppose I could get under and measure the resistance of the O2 sensor wires.... once I've worked out which ones they are!

I replaced them both only a couple of years ago, so I'd be annoyed if they're bad already.

Are the Sensor voltages going up & down ? Could also be the sensor connectors either side of the block. They do tend to gather oil down there.

They are. Up and down 5 volts down to 1 volt near enough.