Stuck and improperly operated power steering pump flow control valve

Replace the power steering pump.

Worn power steering pump seats

Replace the power steering pump.

Scores, cracks, or breaks of the pressure plate, the pump ring, the thrust plate, and the rotor

Replace the power steering pump.

Sticking of the vanes in the rotor slots.

Replace the power steering pump.

Internal leaks and overflow of the power steering pump

Replace the power steering pump.

The damage or restricted flow of the hoses

Replace the power steering hoses and pipes.

Insufficient power steering fluid

Fill the power steering fluid reservoir.