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Normal o2 mv range

This is a discussion on Normal o2 mv range within the Computer & Tuning forums, part of the LSx Technical Help Section category; Ok,I use a aeroforce interceptor scan gauge. Seonsor 1 bank 1 is reading 930mv-960mv when car is full operating temp ...

  1. #1

    Normal o2 mv range

    Ok,I use a aeroforce interceptor scan gauge.
    Seonsor 1 bank 1 is reading 930mv-960mv when car is full operating temp and idle. It dose change when the fans come on though. Also I have seen roughly 50mv-950mv when car is started. I think thats normal correct?

    Now sensor 1 bank 2 is a different story. Its reading 430mv-450mv and staying 440mv-450mv most of the time. What can you tell me about this?

    Codes I have on the car are pretty much normal for headers...
    p0140
    p0160
    p1133
    p1153
    p0133
    Can someone school me a little on what I should be seeing o2 in mv?

  2. #2
    I switched the 2 o2 locations. The mv #s stayed the same and didnt follow to the other sides. Also to make sure I did swap them I swaped them once again and still same result so cant be o2s.
    Cant be extensions either cause im using vette o2s with the long leads.
    Last edited by senicalj4579; 10-11-2010 at 08:22 PM.

  3. #3
    Moderator Cutlass's Avatar
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    O2 sensor mV range from 10 to 1,000 mV and should vary up and down. Especially the front sensors. The should vary up and down fairly rapidly.

  4. #4
    yea thats already been determined. Thanks for the help though.

    Anyone have an idea why the passenger side isnt oscillating?

  5. #5
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    Quote Originally Posted by senicalj4579 View Post
    yea thats already been determined. Thanks for the help though.

    Anyone have an idea why the passenger side isnt oscillating?

    Sounds like the sensor has gotten lazy and needs replaced. The reading should cycle up and down rapidly as posted by Cutlass. As with most parts, O2 senders have a limited life -- they generally pop a heater circuit or go lazy like yours did. Also, over time they become less accurate. I think 75,000 to 80,000 miles is about the standard life expectancy.

  6. #6
    Did you read the whole post? Its NOT the sensor. You guys are not even reading everything or understanding it. Look... copy paste...

    I switched the 2 o2 locations. The mv #s stayed the same and didnt follow to the other sides. Also to make sure I did swap them I swaped them once again and still same result so cant be o2s.
    Cant be extensions either cause im using vette o2s with the long leads.

  7. #7
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    ooohh now that you edited your post so it actually makes sense, I can see what your saying here. But since you want to act rude, I'm done trying to help.

  8. #8
    yea my bad...i forgot to add the "T" in cant so I edited that one word. If you had a brain to begin with you would have understood what was being said anyway. Right back at ya snob gfy

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