where is the sensor installed, if it's too close to the turbo you could be burning it out. also if it's too rich like stated before it could be clogging, but you would have to be running rich as f#(k. if you have the sensor installed level or pointing down in any way it could be building up condensation in the sensor and killing it too. it's best to have them installed slightly above parallel with the ground, point up or somewhere in between.

i've had the same wideband sensor on my car for 4.5 years daily driven (75k+ miles). it's the same sensor as the aem, but with a stock connector.