NZ00Z3 189 Report post Posted April 17, 2022 Hi Over the last couple of years, I've been learning how to read the OBD2 diagnostic logs for E46's and E36/7's. This has mostly happened over in the E46Fanatics forum. Finally got around to writing up how to do the diagnostics. It's based on the M52TU and M54 engines but the principals should apply to most engines. It's a good intro, if you haven't done this type of diagnostics before. Enjoy. How to Read OBD2 Engine Diagnostic Logs V1-7 NZ00Z3.pdf 1 1 Quote Share this post Link to post Share on other sites