marty330d Posted December 5, 2023 Report Share Posted December 5, 2023 Hi, got this fault code which i think is the pre cat oxygen sensors. Got a couple of bosch sensors to install, assuming they are under the air intake housing, but the job looks easier said than done !!. Any help/advice would be appreciated fom anyone who has tackled this job. Thanks. Link to comment Share on other sites More sharing options...
momo Posted December 6, 2023 Report Share Posted December 6, 2023 Never done it, but looks like there's only 1 sensor on the E46 330d (assuming that's what you're asking for) which goes in at the top of the CAT and looks like it plugs in somewhere towards the rear of the engine? Not sure. Definitely looks like something that'd be easier if you could remove the air filter box. http://bmwfans.info/parts-catalog/E46-Touring/Europe/330d-M57N/R-N/mar2004/browse/exhaust_system/diesel_catalyst/ You might get a quicker reply on one of the Facebook groups tbh, there's not many people left on here. Link to comment Share on other sites More sharing options...
marty330d Posted December 6, 2023 Author Report Share Posted December 6, 2023 9 hours ago, momo said: Never done it, but looks like there's only 1 sensor on the E46 330d (assuming that's what you're asking for) which goes in at the top of the CAT and looks like it plugs in somewhere towards the rear of the engine? Not sure. Definitely looks like something that'd be easier if you could remove the air filter box. http://bmwfans.info/parts-catalog/E46-Touring/Europe/330d-M57N/R-N/mar2004/browse/exhaust_system/diesel_catalyst/ You might get a quicker reply on one of the Facebook groups tbh, there's not many people left on here. Thanks for that, good idea about the facebook groups, ill give it a go. Are you in one , any good ? Link to comment Share on other sites More sharing options...
momo Posted December 9, 2023 Report Share Posted December 9, 2023 On 06/12/2023 at 20:21, marty330d said: Thanks for that, good idea about the facebook groups, ill give it a go. Are you in one , any good ? This is the place for anything and everything M57 https://www.facebook.com/groups/3010636552593002/ Called "M57 Performance". Beware, there's a lot of people who have tuned their motors to the n'th and are a little snappy about what they consider to be basic questions. But there's plenty of good, knowledgeable people on there. Link to comment Share on other sites More sharing options...
