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What does code P0141 "post cat 02 sensor heater performance fault" mean

(2000 Chevrolet Cavalier)
in Elkhorn, WI on July 20, 2011
This is what came back from my engine light coming on and being diagnosed.
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Popular Answer
on July 21, 2011
for the po141.
Replace oxygen sensor (cannot repair open or short that occurs internally to sensor).
Repair short or open or high resistance in wiring harness or harness connectors.
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