2010 Toyota Prius p261b code what is the fix?

Question

Prius 2010 it's starting and driving but in couple minutes the engine light and check hybrid system it's comming on and the car stops, I found on chat that the electric pump it's the problem but I checked and it's working, I take the car to dealer and they say I need to change the electric water pump, purge vsv(valve), Ecu and reprogram that will cost 28000$, do I need to do all of that or they exaggerated with all that?
Thanks for help:)

Answer 1

P261B TOYOTA - Coolant Pump 'B' Control Circuit Range/Performance

Read more: https://www.autocodes.com/p261b_toyota.html