Code P0141 from stolen catalytic converter

2002 HONDA CIVIC
18,000 MILES • 1.7L • 4 CYL • 2WD • AUTOMATIC
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IFYUSER
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They stole my catalytic converter and cut it off along with the downstream 02 sensor the harness clip is intact. they installed a new catalytic converter and downstream 02 sensor, but I get now a p0141. Is there a constant hot wire that would short out a relay? I checked fuse number 4 and 2 and there not shorted out. And I checked the 02-sensor wire harness and got 12 volts on one two pins. I couldn't check with the car running because it was getting late.
Dec 1, 2021 at 7:15 PM
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KASEKENNY
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When things get stolen then anything is possible. So, the fact that this is giving us a code for this sensor means we need to just run through the testing and see if that leads us to the issue.

Sometimes it doesn't when it is not just a faulty component causing the code to set but instead human error or tampering but we need to start with it just to find out why the ECM is setting this code.

Here are some guides that will help with this testing:

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Below are the steps that we need to follow so let me know what questions you have with this, and we can go from there. Thanks
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Dec 2, 2021 at 2:43 PM
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IFYUSER
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I figured it out they sold me an up-stream sensor instead of a downstream. I cleared the code, and it hasn't come up like before.
Dec 2, 2021 at 3:01 PM
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KASEKENNY
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Oh. That is great. Good find. Usually, the upstream and downstream are the same but when they are not it can be confusing so thanks for sharing this info.

Please let us know if we can help in the future and thanks for using 2CarPros.
Dec 3, 2021 at 5:14 AM