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-   Everything Electrical & Electronic (https://www.gmforum.com/everything-electrical-electronic-108/)
-   -   recurrent O2 error codes (https://www.gmforum.com/everything-electrical-electronic-108/recurrent-o2-error-codes-195432/)

macho_mike21 12-22-2003 03:00 PM
recurrent O2 error codes
 
We have replaced the O2 sensors twice, the error codes come back after 24 hrs saying sensor heaters are malfunctioning. At last check today at Autozone, the codes were: PO135; PO140; PO141. Anyone had wiring harness problems in this regard?


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