2006 S40 2.0D charging problem.

[majeka]

Hello, this car is charging ok but after and engine start and driving 1km a fault comes on dash to say " POWER SYSTEM SERVICE URGENT" with red triangle lit below,

Car recently had a new rectifier and didnt solve it.

Any ideas

[gusdaver]

Maybe the problem is regulator

[Mr BLACK]

use a diagnostic tool and post fault codes