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DTC 2C3D - O2 sensor Bank 1 Sensor 1
SES has been lit for a couple of months but the car seemed to be operating fine. The code is 2C3D, O2 sensor bank1 sensor 1.
I dreaded the prospect of replacing the sensor due to challenging access. I decided to instead treat the connection using Deoxit first, before diving in.
Viola!
SES is gone. Drove for several miles without the code returning. Problem resolved. These cars are rolling computer networks. Treating electrical connections with a high quality cleaner can only help. It worked in this case.
It's weight off the shoulders running the car with no SES. Hope this helps someone down the line.
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2011 6MT RWD ClubSport Wagon | 3,185lbs | 1 of 149 ZSPs delivered in North America
Outside: BMW M-Aero, Euro region lighting, Seibon | Inside: M3 cockpit, Recaro SPG, Prototipo, AutoSolutions SSK, UCP | Stop: M3 ST-40R, PFC | Grip: Solid-mounted subframes, rear coilover conversion, M3 Nitron R3, Hyperco, SPL, AKG, ARC8 | Go: StageFP, CF snorkel, 3IM, MILVs, SuperSprint headers, Dundon Motorsports Inconel exhaust, VoltPhreaks | Cool: CSF | PCA #2018100384 | BMW CCA #505794
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