What does engine system service urgent mean?

Internet search suggests faulty alternator, after testing and cleaning battery cables, but some after market alternators also continued to display the error, so be careful in purchasing a replacement alternator.

https://volvoforums.com/forum/volvo-s40-11/2005-s40-t5-power-system-urgent-service-64180/

https://forums.swedespeed.com/showthread.php?336857-quot-Power-System-Service-Urgent-quot-Red-Dash-Light

Check the problem with the service and repair manual to fix the problem easily with diagram and you will get the manual from the given link https://toolsnyou.com

Hi Barbara:
That will be a "service engine soon" message.
If it is continually flashing it means it is urgent.
Often it will mean that the engine sensors are trying to tell you that the information they are getting is outside the "normal" range.
A mechanic can retrieve codes that tell what is wrong.
Depending on the age of the vehicle, it is not uncommon for a sensor to need replacement.
Hopes this helps.
Cheers.

spn 1569 relates engine protection torque derate -condition exists.
critical fault codes related to engine operation are active
code 1 means urgent attention
A sort of limp mode setting that requires immediate attention by a cummins service center to prevent further damage to the engine
go google and type in--- cummins engines fault codes (or cummins engine fault code 1569) and there are pages of pdf downloads that list all the codes and what they stand for

High oil pressure can mean only a few things:
1. clogged oil passage in engine. Urgent.
2. wrong oil put in. Less urgent, but needs to be fixed.

Sort of depends on how high

You have a problem with the DPF additive system.

You can only check in hidden menu which modules have some errors (DTCs). Then you need to visit your Volvo dealer.

It's the airbag system, you need to get the system checked, this means the airbag might not deploy.

Do you know someone who can take you there?

Posssible charging system fault. Alternator/battery etc. If the battery is not charging and you use vehicle it will breakdown