BMW Questions? Ask a BMW Repair Expert for Answers.
Hello and thank you for your question,The code P0141 in most cases is set due to a Bank one sensor two (rear HO2S heater fault) and in most cases replacing the sensor will resolve this code. Its a good idea to run the test to verify that it is a fault before replacing it. I have enclosed the step to test it in the link below. Copy and paste the link to your browser to open and view them.https://dl.dropboxusercontent.com/u/104923897/P0141%20Nov%202.pdf.