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delvec03 · 03-25-2023, 01:35 PM

P0036 is the heater circuit for the upstream O2. The heating element fried itself. Get a new one. Replace it. Diy is a few min with the right tools. Upstream O2 needs to be maintained and feeds the ECU for engine performance.

03-25-2023, 01:35 PM	#3
delvec03 First Lieutenant 90 Rep 351 Posts Drives: 228i Sport/ DSB Join Date: Feb 2015 Location: United States, DC iTrader: (0)	P0036 is the heater circuit for the upstream O2. The heating element fried itself. Get a new one. Replace it. Diy is a few min with the right tools. Upstream O2 needs to be maintained and feeds the ECU for engine performance.
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