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i replaced the sensor with an oem sensor and the ses light comes back on after about 50-100 miles and i have tried to reset it multiple times

Vehicle: 2001, BMW 330xi, 3.0L

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Hi there,

Here is a list of possible causes for this code.

P0161 BMW - O2 Sensor Heater Circuit Malfunction Bank 2 Sensor 2 

Read more: https://www.autocodes.com/p0161_bmw.html

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