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P1141 CODE

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2000 Mazda Protege ES. Trouble code P1141 - Faulty HO2S12, HO2S12 harness is open or shorted, HO2S12 circuit poor electrical connection.

I recently had the alternator and upper O2 sensor replaced. Could there be a problem with the harness?

Vehicle: 2000 Mazda Protege ES 1.8L engine (gas)

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P1141 H02S (rear) heater circuit low

That or the 02 sensor is shorted

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