O2 sensor reading .4 mv unplugged
07-23-2009, 05:24 AM
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O2 sensor reading .4 mv unplugged
If I unplug the oxygen sensor wire, shouldn't the reading from the scanner be 0mv?
EDIT: sorry, .4 volts.
EDIT: sorry, .4 volts.
Last edited by pimpflea; 07-23-2009 at 05:50 AM.
07-23-2009, 08:31 AM
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Re: O2 sensor reading .4 mv unplugged
The .4 volts is correct. When the O2 sensor is unplugged, which is the same as a cold sensor, the O2 amplifier chip biases the output to 450 mV (or real close to that).
So seeing .4 volts with the O2 unplugged is normal.
RBob.
So seeing .4 volts with the O2 unplugged is normal.
RBob.
07-23-2009, 01:10 PM
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Re: O2 sensor reading .4 mv unplugged
07-23-2009, 06:03 PM
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Re: O2 sensor reading .4 mv unplugged
I am scanning it through the ALDL cable to my laptop (TunerPro RT).
Thanks for the reply, I wanted to make sure there wasn't a problem before connected the NBsim from my wideband.
Thanks for the reply, I wanted to make sure there wasn't a problem before connected the NBsim from my wideband.
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