[Mountain_Commando]

Hi all,

Ever since I got my catless DP, I've been getting the CEL (as expected).

My MHD tune clears out the CEL, but it always comes back.

Looking at the actual code (below), it seems to be the upstream sensor. I reckon I should get it replaced.
12B104 - Oxygen sensor heating before catalytic convertor activation. Line disconnection.

Would this sensor work?
Cheers.

[Ristau]

Originally Posted by Mountain_Commando

Hi all,

Ever since I got my catless DP, I've been getting the CEL (as expected).

My MHD tune clears out the CEL, but it always comes back.

Looking at the actual code (below), it seems to be the upstream sensor. I reckon I should get it replaced.
12B104 - Oxygen sensor heating before catalytic convertor activation. Line disconnection.

Would this sensor work?
Cheers.

I got a code after my Catless installation for the heated O2 sensor not heating up properly and replacing it fixed my issues completely. I bought my replacement from FCPEuro (not sure if they're available in Australia) due to their lifetime warranty on the off chance that the O2 sensor fails again during my ownership.

Part number was Bosch 11787596924 so as long as the part number matches you should be fine. I'm sure there are others that would work as well, but that Bosch part is OEM.


EDIT: Just realized you had a 435i GC, not a 335i haha.

the Part number for your vehicle is 11787596908 and matches with the Ebay listing. As long as the seller is trust worthy, that part should be what you need.

[MTWO]

My buddy just got one from there and it worked perfect.