VOLVO
AUM-47FF - Amplifier. Not connected or communication problems. Intermittent fault
System
Audio Unit Module (AUM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007)
Show models by year and engine (4)
What does this fault code mean?
The audio control module (AUM) has at some point failed to detect the amplifier, or found it incorrectly fitted. The fault is intermittent. Connections and wiring may be the cause, but the amplifier itself may also be defective.
Possible causes
- Incorrectly fitted amplifier
- Defective amplifier
What you can do
- 1Check that the connectors at the amplifier and the audio control module are secure and free from oxidation
- 2Check the wiring between the amplifier and the audio control module for damage
- 3Clear the code and check whether it returns
- 4If it returns, have the amplifier checked by a workshop
Symptoms you may notice1
- No sound from the audio system
General guidance for car owners. Diagnosis on the car can point to a different cause.