OBD2 vs. OBD1 has to do more with USA EPA emissions regulations. Then someone somewhere lobbied hard to make all cars comply to their OBD2 connector and protocols.
All your car's modules are on K-Line protocol, and should work fine with any of the usual diagnostic cables.
I would get a real scanner hooked up (just in case Chinese quality control wasn't up to par that day), and then check fuses and wiring.
Also your E39 with Temic MRSZ3 airbag module was notorious for the ECU Internal Fault error.
-Abel
- E36 328is ~210-220whp: Lots of Mods.
- 2000 Z3: Many Mods.
- 2003 VW Jetta TDI Manual 47-50mpg
- 1999 S52 Estoril M Coupe
- 2014 328d Wagon, self-tuned, 270hp/430ft-lbs
- 2019 M2 Competition, self-tuned, 504whp
- 2016 Mini Cooper S
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