Tiptronic codes 70, 00008C

[mb230sl]

Hi guys, last week, the Boxster tiptronic developed a fault and entered limp mode. Disconnecting the battery and touching the terminals did not clear the fault.

I read codes with an Autel MB906BT, which returned tiptronic codes 70 (solenoid valve, torque converter clutch), and 8000C (refer vehicle service manual),

I cleared the codes which has removed limp mode, but I am yet to drive it.

I have tried to lookup 8000C but have drawn blanks.

70 has been present a while but has never resulted in limp mode.

Does anyone know what 8000C is ?

Thank you