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P0141 Toyota - corolla

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Do I need to replace the sensor?
Vehicle: 2004 Toyota Corolla

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P0141 02 sensor heater circuit malfunction Bank 1 Sensor 2

This is for the rear or downstream 02 sensor, the heater portion of the 02 sensor is what wear out first for the 02 sensor. so yes more than anything your 02 sensor is at its useful life.

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