No driveability impact, but the catalyst monitor will not complete until it is fixed.
A heater circuit fault on the downstream bank 1 sensor, overlapping in meaning with P0036. Rear sensors rely heavily on their heaters because exhaust gas has cooled considerably by the time it reaches them — without heat they may never reach operating temperature at all on short journeys.
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The downstream oxygen sensor's heater exists so the sensor reaches operating temperature quickly and stays there when the exhaust runs cool. P0141 says the heater's circuit is faul...
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