VOLVO
SUB-U300042 - Control Module. System Internal Failures. General memory failure
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 subwoofer control module cannot read data from its memory or write to it. The module then uses standard values instead of its own settings, and the bass speaker can stop producing sound.
Possible causes
- Damaged subwoofer control module
What you can do
- 1Clear the code and check whether the bass speaker plays sound again
- 2If the fault returns after clearing, the subwoofer control module is damaged. Have a workshop replace it
- 3After replacement, check that the bass speaker plays sound and that the code does not come back
Symptoms you may notice2
- Other audio problems in the car's sound system
- No sound from the bass speaker
What the fault can affect1
- Standard values are used in the control module
General guidance for car owners. Diagnosis on the car can point to a different cause.