12mm O2 Voltages

[Onthefence]

Is there a chart on what the 12mm O2 voltages represent in either Lamda or AFR?  I know the 18mm read 0-1v.  The 12mm voltages are in the .9ishto 5 volt range.  Just wondering was is normal as my front sensor reads 2.2 - 2.6 when crusing and is pretty steady, yet my rear reads .9 - 1.62 and bounces.

I am thinking that the front is an issue.  I did some TTS recordings and was getting p0134 DTC.  The code is present more often than not.  But, I am not getting a check engine light.

[HogBag]

My 2007 diagnostic manual states the 02 sensor is to cold to respond ? What headers are on the bike ?. The 12mm sensor could also be toasted.

[TheBobs]

Edited

[Doc 1]

Is there a chart on what the 12mm O2 voltages represent in either Lamda or AFR?  I know the 18mm read 0-1v.  The 12mm voltages are in the .9ishto 5 volt range.  Just wondering was is normal as my front sensor reads 2.2 - 2.6 when crusing and is pretty steady, yet my rear reads .9 - 1.62 and bounces.

I am thinking that the front is an issue.  I did some TTS recordings and was getting p0134 DTC.  The code is present more often than not.  But, I am not getting a check engine light.

The 12mm 02 sensors operate from 1 to 2 volts (1000/2000 mv)