06 Colbalt PO133 and P1133 - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 6 (permalink) Old 07-30-2012, 03:30 PM Thread Starter
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Unhappy 06 Colbalt PO133 and P1133

Had converter code, changed converter with a Walker converter and changed front O2 sensor with a Bosch now I keep getting PO131, PO133 and P1133 codes.
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post #2 of 6 (permalink) Old 07-30-2012, 03:48 PM
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Lots of people here have had the same problem with HO2 sensors other than OEM or AC Delco.

---------- Post added at 07:48 PM ---------- Previous post was at 07:45 PM ----------

Those codes are saying your first HO2 sensor is not working at all.

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post #3 of 6 (permalink) Old 07-30-2012, 03:56 PM
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Yeah, probably got the upstream and downstream sensors switched. Also, Coby is right only go OEM with the sensors. Too many problems.


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post #4 of 6 (permalink) Old 07-30-2012, 05:50 PM Thread Starter
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I am pretty sure I didnt switch the sensors
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post #5 of 6 (permalink) Old 07-30-2012, 05:58 PM
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Might want to read this thread....
https://www.yourcobalt.com/forums/pro...ode-p2271.html

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post #6 of 6 (permalink) Old 07-30-2012, 06:31 PM
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as someone who has had o2 problems when he tried aftermarket (i used bosche aswell). Go get a oem one from the dealer, all your problems will go away. Aftermarket ones lasted me 3 days, dealer one has been in since the beginning of april with no problems

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