F83 engine code

LINF83 · 01-16-2021, 07:19 AM

Can someone tell me which oxygen sensor is code 12a902 ?

paulo_f80m3 · 01-18-2021, 02:54 PM

Quote:

Originally Posted by LINF83

Can someone tell me which oxygen sensor is code 12a902 ?

12A902 - Oxygen sensor after catalytic converter, electrical: short circuit to ground.
12AA02 - Oxygen sensor after catalytic converter 2, electrical: short circuit to ground.

So it's the Oxygen sensor after the catalytic converter in bank one. The Longer downpipe.

Part number 11787848486

https://www.fcpeuro.com/products/bmw...mm-11787848486

NYG · 01-18-2021, 02:55 PM

I remember bmw had a bulletin on faulty post-cat sensors like a year or two ago. They were replacing them for free.

01-16-2021, 07:19 AM	#1
LINF83 Lieutenant 852 Rep 445 Posts Drives: F80 Join Date: Feb 2019 Location: Maryalnd-DMV iTrader: (0)	F83 engine code Can someone tell me which oxygen sensor is code 12a902 ?
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01-18-2021, 02:55 PM	#3
NYG Brigadier General 10731 Rep 3,686 Posts Drives: Audi R8 Join Date: Feb 2017 Location: Brooklyn, NY iTrader: (0)	I remember bmw had a bulletin on faulty post-cat sensors like a year or two ago. They were replacing them for free.
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