May 3, 2019 · Engine codes now suggest it’s the oxygen sensor before the catalytic convertor. Codes are: 2A35 OXYGEN SENSOR BEFORE CATALYTIC CONVERTER, DYNAMICS - 2A90 OXYGEN …

May 21, 2018 · Do both o2 sensors fine tune the emissions on the mini I believe the upstream sensor tells the ecu what the emissions are after it leaves the engine and the ecu fine tunes the mixture …

Sep 10, 2018 · Hi, i have 08 R56 and show a code: Oxygen sensor before catalytic converter: plausibility. I have put other sensors but it continues appearing. If someone...

Jul 3, 2008 · I was just told that the O2 sensor after the catalytic converter is bad. My 2002 S is long out of warranty and its a US$300+ fix ($265 for the part). Am I doing any harm by running the car with a …

Oct 26, 2019 · A second oxygen sensor is now used downstream of the catalytic converter to monitor the converter's operating efficiency. On V6 or V8 engines with dual exhausts, this means up to four …

Feb 15, 2021 · What I would do is check the wiring that the oxygen sensor connects into zip tie that to something out of the way of the heat from the catalytic convertor. It might mean your lower one …

Aug 8, 2021 · I've tried cataclean a few times and sadly it doesn't seem to fix it I clear the codes and within 300 miles its back again, I've also replaced O2 sensors to no avail I've also used a small …

Jan 13, 2009 · I have a 2005 MCS and the SES light came on yesterday. I plugged in my friend's reader and fault code P2096 shows. Searching the internet and this site shows that means one of two …

Aug 6, 2023 · Hello!, Car: 2011 R55 S Clubman Recently swapped to a catless Downpipe and ever since I've been getting some unexpected codes. I'm getting the following codes: 2D13 - After cat o2 …

Apr 4, 2009 · Just had this fault code on my recently bought Mini, and it stands for: P0420 Catalyst System Efficiency Below Threshold I've cleared it and will see how we get on with it, but if it goes …