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The sensor light is reminder to check/replace the o2 sensor. The light is tripped by the odometer. to turn the light off remove the panel under the passenger side dash(the one with the light on it) look for a yellow wire with a green lione on it. there should be a connector right there. just disconnect the connector and the light will go off.

hope this helps you out.

> I used to have an '85 Sentra (don't laugh)
> and it had a sensor light also. It is
> tripped by the mileage, at 60k miles it went
> on, indicating you're supposed to take it to
> the dealer and get the oxygen sensor
> checked. I ignored it, drove it another 120k
> miles (yes, 120,000) before I sold it, still
> running beautifully. Did you recently pass
> some mileage point? 60k, 90k miles?
> Something like that? If it bothers you, take
> it to a dealer and have them turn it off, or
> take some electrical tape and cover it up.
 

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Re: SENSOR light is on!How to turn off?

The light is tripped by a switch in the odometer it will not automatically turn off if you replace the o2 sensor. Either disconnect the wire or rip out the dash and adjust the switch on the odometer so it is always closed.

> YES...now I remember! I was fixing the stock
> stereo (82zx) and I happened to open
> that panel. I saw two wires not ocneected,
> and since they were the only two wires
> around, I connected them.

> My question though is, how do I make the
> system turn the light off itself? Should I
> change the o2 sensor? What?
 
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