No picture.

Code is probably not major if the problem is ATF seeping into the TCM and/or a bad conductor plate (the rpm sensor is in the conductor plate). Conversely, that’s probably all that’s wrong. You’ll need SDS or a similarly sophisticated code reader to clear the codes after correcting the problem. A generic OBD scanner will clear OBD codes but not module level codes... which you appear to have access to with the iCarsoft so you’re set.

Sixto
98 E320s sedan and wagon