car's problem-volvo s80 2000
 

hello,
I have a Volvo s80 and recently have problems in igniting the car.
I went to the garage and I authorized testing and these findings:

CEM-1A5D Communication with AUM control module Signal missing

: DTC is found active

What does this problem? On a sensor or system is a problem?
And how do you think you can fix it?

Thank you

Someone?

the aum is the audio module. more than likely its either unplugged or faulty. that will not cause problems with turning the car over.