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Re: Error code P0141, 3.8 v6 Regal 2001
The DTC is a 02 sensor heater circuit malfunction. It is a heated 02 sensor. One referenced is the post CAT converter 02 sensor (bank 1, sensor 2). It is located in that u-bend section of exhaust pipe you see between the CAT converter and resonator. Check the electrical connector to it first. To remove it all you need is a universal 02 sensor socket with the wire cutout or a 7/8" wrench since clearance is limited.
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