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1996 Buick Park Avenue Question: code p1441
Answer #1Bret Bodas from RepairPal Test Shop, March 03, 2010, 13:16Master
Code Definition: Buick: Heated Oxygen Sensor (HO2S) Heater Control Circuit Bank 1 Sensor 2
This is generally due to a failed Oxygen sensor heater. The heater is part of the O2 Sensor and is similar to a cigarette lighter, when current is applied to it, it heats up. A quick check of the power and ground signal to the sensor, and a resistance check of the heater circuit will reveal the problem.