My power steering is very erratic. Most of the time, it works properly, but then....no power steering. What to do?

 

I get no power steering when turning right, left is normal. So far I've tried, and maybe you can to:

*eps reset procedure (listed here in the forums)
but didn't work for me. Eps light stays on after 2nd 45° turn.
*disconnected and reconnected eps module
*regreased under the dust cap of torque sensor

next to try:
*replace torque sensor, and eps module if needed.