OK
Depending on the scanner , that could be ISC from the DM module or a bad Starter LocK sw [ Neutral Saftey SW] from the EA module.
If you go here :
E320 16 PIN DTC Charts inc. pin 8, pin 14
.. then you will see that you can access each module with a LED tool that you can make for a couple of $$.
You want to go to socket # 14 for ASR codes ..
Does your chassis have a CE lamp and a Push Button on the Diagnostic Box next to the battery ??.. If yes , that is Cal version and will have the LED/SW at the box.