Can you sue your landlord for a black mold issue, that was caused by their poor maintenance on an ac, that caused leaking, that caused mold in california?

No you cant.

If it causes any type of property damage (leakage) or health-related problems/concerns you can sue your landlord in other states. However, in California, you can't sue because landlords aren't required to test for any mold. They may give you money for relocation, but you can't sue them.

their just depressed and think that if they give pain to some one else the pain goes away from them. which it doesn't.