I've had a P0130 code, showing bank 2 sensor 1. So, I bought 2 new #15175 Bosch O2 sensors.

Installed them yesterday,...and all seemed good (smoother idle and more power, until the Check engine light came on again.

I unclicked the connector, cleaned and sprayed it with "wire dry" and let it air dry for a couple of hours, Erased the code, took it for a test drive and same thing. P0130 showing bank 1 sensor 1.

I checked the data output of the sensor with my scanner and it showed 0.000 with no changes or fluctuations. All 3 other sensors showing fluctuations.

I pulled the new O2 sensor, and re-installed the old O2 sensor, that was working fine when removed,....it looked good when I first started the truck, showing the usual fluctuations in the usual range as the others,....but when I got back from a 10 minute drive,.....it was also now reading 0.000.

Any idea what is going on here? BTW I also noticed that the STFT (Temporary fuel trim I think) is also at 0.000. No idea if that is correct or what it indicates.

Can anyone tell me what's going on? BTW, my idle is still nice and smooth, which it was NOT before replacing the O2 sensors (both new) yesterday.

Here's a pic of the readings I got on my scanner:



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I encountered the same problem on mine. The new O2 sensor was bad and reading 0.000 after a few minutes of driving. Replaced with the old one and same error. Ordered a new one and cleaned the connectors with CRC QD Electronic Cleaner waited until it dried and used CRC Di-Electric Grease Compound on the connector. Cleared the check engine light and all is well.

 

Same thing happened here. Although I was switching my two rear o2's to see if my 0420 would follow. Somehow the switch killed one of my o2s. Would read 0.45 (or maybe it was 0.045) for about 5 min then drop to 0.000. Just replaced it today. But Ive also recieved a bad o2 in the mail before. It happens :/

 

Wondering if there might be another issue elsewhere,...........but after about 3-4 days of driving with the OLD O2 sensor back in place, The check engine light suddenly quit coming on......no more codes, and the engine is running consistently better. No idea what changed,...but for now, I think I will leave the one Old O2 sensor where it is.

Also noticed that I get "Closed" on both fuel systems now,....so, maybe that was the issue,...don't know what causes the open or closed (Loop?) readings.........Anyone know?

Brian

 

The bad o2 sensor or sensor connection prevents the fuel system from closing.

I hate to me too but I will... I've had the same problems with new and swapped sensors. And I've taken the same precautions to clean the connectors. They just have a mind of their own.