Opel Corsa C power steering problem

[omglol]

Does someone know what goes usually wrong with Corsa C power steering (as I recall this is common fault on this cars)?

Diagnostics shows C1507 - Wrong motor voltage. Alternator already checked and working fine, so this is definitely power steering problem.

[smirnoff_rules]

check relay and control unit

[alessioblaupunkt]

Hey is there Delphi sh*t PS in that Corsa.
Does the power steering sometimes become hard after starting the vehicle?

[omglol]

No, the power steering is not operational completely ... So the power steering is hard always.

[alessioblaupunkt]

Is it Delphi? Worst brand ever for PS since 1900.