✏️ Peter Wright
Paul.
I don't believe the Subaru's used a Titania sensor, I believe it was just a heated Zirconia Sensor BUT I could be wrong 
If the vehicle is RICH and the O2 sensor signal is LOW (0.3v)and not switching, then you most likely have a dead or dying sensor be it Titania or Zirconia sensor OR an air leak in the exhaust very close to the sensor.
Cheers
Peter Wright
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SUBARU IMPREZA EJ20G 1993 - Paul Garland December 10, 2008, 10:52 pm
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on December 11, 2008, 2:38 pm, in reply to "