My BlueDriver scanner reads O2 sensor voltages for 3 positions, even though My 99 Cali Emissions has 4.
Two of the three have voltages ranging from 0.060 to 0.800 volts. And the other sensor stays put on 0.220 volts and sometimes ranges from 0.210 to 0.230. but mostly on 0.220.

Which isn't normal, the big range or the tight range? And how does one get whichever back to normal?

Something is kicking a P1130 code despite replacing the solenoid. Gotta love the ambiguity of the codes with a list of 10 or more possibilities!

Thanks!