2003 toyota prius hybrid while driving suddenly warning light come on with PS sign on then steering become hard. what fault it and what is solutin

PS sign indicates problem with power steering. most likely is has electrically assisted steering and needs attention. may want to contact the dealer to make sure it is not under a recall before pursuing any further. the Prius cars have had alot of problems recently.

Check out your owner manual and see what it says about
this light.
It should be under warning lights section.

some other garages can diagnose this problem m8 but its not wise as there not used to the system there gonna charge about 70pound to look at it, how old is the car? it might still be under warrenty, it should not have done to much damage though.

Hi. When you have that particular light on, you need to get the power steering motor checked. This is not something that a non-Toyota service shop can check out. You need to take it to a Toyota dealer. They can check the steering motor system, and diagnose exactly what the issue is. Unfortunatly, there is no other way you can check it, as there is not "pump" on the stweering, it is actually a small motor that runs the steering.

Check there staring Shaft and turing point it might be lose...

I don't know about hybrids, but on most vechiles, you check power steering fluid with engine running.

sounds like the pump, the flued is over heating, and the garage not trying long enuf,

Seems to be alot of this problem mentioned on this forum regarding prius warning lights.
Don't worry yet might just be a service reminder.
Google " 2005 prius warning light " the first page will show a link to toyotapartsandservice.com where you can find the owners manual that covers all the warning lights.

your owners manual should show all of the symbols and what they mean.I tried to get one to look at it but no luck...they should be in the manual though

The Prius has electric power steering. The "PS" in a rectangle means that the computer has detected a problem there. The red triangle with an explanation mark means that the computer has detected a problem with the Hybrid System. Usually it is accompanied by red symbol of an automobile. In any case you should take the car to a dealer who can read the diagnostic codes from the computer and determine the cause of the problem.