My AL 619 shows the downstream o2 sensor voltage o2B1S2, B2s2. The upstream o2B1S1, o2B2s1 shows mA instead of voltage. Is there a way to see the voltage instead of mA for a B1S1 sensor? o2 sensor monitoring is not compatible with my car. 

Tags: o2 , upstream , voltage

  Thank you for your response. Perhaps I am believing I am looking at the right sensor data and am not. The downstream o2 sensor is shown as o2B1S2 & o2B2S2. On the AL619 I don't see an o2B1S1 or o2B2S1 in the menu. The only other thing that is close shows o2S11 and o2S21. It is on the same page with the EQ_RAT21 % readings. So if the o2S11 and o2S21 readings are air fuel ratio sensors, does anyone know where I can see the upstream O2 voltage output on the AL619? The o2 monitor test specified in the AL619 menu is not compatible with my car, so I'm looking for the upstream o2 voltage in the live data.