Can high intra cranial pressure cause neurological symptoms?

Yes: In the acute phase(ie. Right after a bad head injury), it can lead to death. If you are talking about a slower (weeks to months) increase over time, for example with a brain tumor, it can lead to focal neurologic deficits such as weakness, speech problems, seizures-depending on its location in the brain.

Intracranial pressur: Increased intracranial pressure, particularly high pressures of greater than 20 can clearly caused neurological symptoms and if high enough can be life threatening.