O² Sensor Issues

spiritsavage · 12-03-2020, 07:41 PM

So tuned back to stock from MHD for inspection, and I keep getting an O² sensor code. I've replaced the O² Sensor twice, but I still get the code. Drove 70 miles tonight with no code, but I did some Live Data Readouts. Found some really weird anomalies. The first is what it was like normally, but as you can see on the other pics the O² resistance (in ohms) spikes like crazy. Any ideas?

BSM n54iS · 12-03-2020, 07:55 PM

How'd you type out the ^2?

JonOhh · 12-03-2020, 08:57 PM

Quote:

Originally Posted by BdSM n54iS

How'd you type out the ^2?

Ngl I clicked on this thread to ask the same question.

JonOhh · 12-03-2020, 09:04 PM

That's very interesting for that information to be displayed like that, typically •*:O^2:*• sensor readings are by voltage? I also assume that would not be heater circuit resistance, rather the actual sensor resistance?

Hoping someone who knows will chime in soon.

12-03-2020, 07:41 PM	#1
spiritsavage Enlisted Member 2 Rep 35 Posts Drives: Stock BMW 335xi Join Date: Jan 2019 Location: DFW, TX iTrader: (0)	O² Sensor Issues So tuned back to stock from MHD for inspection, and I keep getting an O² sensor code. I've replaced the O² Sensor twice, but I still get the code. Drove 70 miles tonight with no code, but I did some Live Data Readouts. Found some really weird anomalies. The first is what it was like normally, but as you can see on the other pics the O² resistance (in ohms) spikes like crazy. Any ideas? Attached Images
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12-03-2020, 07:55 PM	#2
BSM n54iS Brigadier General 2685 Rep 4,202 Posts Drives: '11 335is \| '16 Macan Turbo Join Date: Aug 2015 Location: Everywhere and Nowhere iTrader: (7)	How'd you type out the ^2? __________________ '11 335is BSM MT "BMW Performance Editon" \| '16 Porsche Macan Turbo GruppeM CF Intake \| AR Resonated DP \| ER CP \| Turbosmart RacePort BOV \| Cobb FMIC \| RB Inlets \| RB External Mishi/Turner OCC \| Michelin PS4 \| BMW Performance Springs/Bilstein B8 + Dinan & M3 bits \| BMW Brembo BBK \| BMW Performance CF Spoiler \| BMW Performance CF Lip \| BMW Performance Alcantara \| PS Designs GTS Armrest \| AG H6-40 \| Rear Seat Delete
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12-03-2020, 09:04 PM	#4
JonOhh Captain 672 Rep 733 Posts Drives: 06' 330i Join Date: Dec 2019 Location: Tuscaloosa, Alabama iTrader: (0) Garage List 1999 BMW M3 [10.00] 2013 Fiat 500c Abarth [0.00] 1985 Fiat/Bertone X1/9 [0.00] 2006 BMW 330i [0.00]	That's very interesting for that information to be displayed like that, typically •:O^2:• sensor readings are by voltage? I also assume that would not be heater circuit resistance, rather the actual sensor resistance? Hoping someone who knows will chime in soon.
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