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  1. scottm

    What should my O2 sensor output look like?

    This is a screenshot from a ProScan 3.2, I started a thread about these devices as I was searching for one: https://forum.ih8mud.com/showthread.php?t=76332. I chose this one because it comes with the new Elmscan5, and the new ProScan 4.0 looks very good. Apparently ProScan4.0 is still in...
  2. scottm

    What should my O2 sensor output look like?

    Like this. This morning I cleared P0116(coolant temp sensor performance) and P0141(HO2S heater performance bank1 sensor 1), and tonight I got another code P0141(HO2S heater performance bank1 sensor2). This was idling in my driveway, after a couple hours of shutdown.
  3. scottm

    What should my O2 sensor output look like?

    I've got my OBDII scanner running, suspecting a bad O2 sensor. The #1 sensor jumps up and down as does the fuel/air mix, the #2 sensor is pretty steady at about .7Volts. On my other two cars both front and rear sensors seem pretty active, so I think that's bad.
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