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Joined: Sep 2017
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Has anyone ever had an intermittent oxygen sensor fault? I had one today and one hour later after a restart everything is good.
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Joined: Dec 2014
Posts: 9,089
Campfire Outfitter
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Campfire Outfitter
Joined: Dec 2014
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Did you clear the code or did it do it itself? If you cleared it, I hate to say it, but it will probably light up again.
Well this is a fine pickle we're in, should'a listened to Joe McCarthy and George Orwell I guess.
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Joined: Sep 2017
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Campfire Regular
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Did you clear the code or did it do it itself? If you cleared it, I hate to say it, but it will probably light up again. It cleared on its own. I'm looking at sensor performance. The sensor hi fault indicates that the sensor signal is disconnected and the pull-up resistor on the computer a/d is raising the signal to 5v. Possible failure modes are internal sensor failure or open signal circuit to PCM. The wiring looks good.
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Joined: Dec 2014
Posts: 9,089
Campfire Outfitter
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Campfire Outfitter
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Are we talkin' O2 sensor or MAP sensor?
Well this is a fine pickle we're in, should'a listened to Joe McCarthy and George Orwell I guess.
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Joined: Sep 2017
Posts: 2,795
Campfire Regular
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Are we talkin' O2 sensor or MAP sensor? O2 sensor, left upstream 1:1
Last edited by MM879; 04/01/20.
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Joined: Feb 2010
Posts: 16,076
Campfire Ranger
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Campfire Ranger
Joined: Feb 2010
Posts: 16,076 |
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Joined: Dec 2014
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Campfire Outfitter
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Campfire Outfitter
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Oops, sorry. I was thinking p0622 universal code, p1622 is manuf specific, I'm clueless. Left bank sensor 1, since it won't cost anything, unplug it if it's easy to reach and disconnect the battery, 5 min reconnect, the mother ship may recalibrate the sensor values on it's own depending on make and year? If it goes out and stays out, go buy a lottery ticket.
Well this is a fine pickle we're in, should'a listened to Joe McCarthy and George Orwell I guess.
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Joined: Sep 2017
Posts: 2,795
Campfire Regular
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Campfire Regular
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I got a feeling that the OEM forgot to use gold terminals on the harness side. The mileage is O2 sensor mid-life. The sensor shouldn't be bad yet. The engine doesn't have any running issues. I'll take a look at the harness side female terminal with a USB microscope and see if I can identify any gold flash. Removing and installing the connector should be enough to wipe the terminal contacts.
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Joined: Feb 2013
Posts: 6,454
Campfire Tracker
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Campfire Tracker
Joined: Feb 2013
Posts: 6,454 |
I think I have that on my corvette. I replaced sensor 3 times with delco and off brands. I can't get it cleared. I had it in the shop 10 times, no go.
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