VOLVO
SUB-U300016 - Control Module. General Electrical Failures. Circuit voltage below threshold
System
Subwoofer Module (SUB)
Volvo models this fault code applies to
Applies to the following models:
3 modelsV70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (3)
What does this fault code mean?
The direct voltage to the internal components of the control module is too low, which may be caused by a damaged subwoofer control module. The bass speaker can then stop producing sound.
Possible causes
- Damaged subwoofer control module
What you can do
- 1Check that the fuses for the audio system are intact
- 2Check that the car battery is sufficiently charged and that the battery terminals are secure
- 3Clear the code and check whether it returns
- 4If the fault remains, have a workshop replace the subwoofer control module
Symptoms you may notice2
- Other audio problems in the car's sound system
- No sound from the bass speaker
General guidance for car owners. Diagnosis on the car can point to a different cause.