VOLVO
ICM-6C71 - Audio module (AUD) not approved. Faulty signal
System
Infotainment Control Module (ICM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
5 modelsC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
What does this fault code mean?
At start-up ICM compares the serial number of the audio module (AUD) against a list of approved units held in the CEM. A unit missing from that list is locked out, so sound from the car's system is lost. The code is set when this mismatch occurs, often after a swap where the new unit received no software.
Possible causes
- Fitting an audio module the CEM list does not approve
- No software loaded when the audio module was changed
- The software load failed or did not finish
What you can do
- 1Clear the code and run the car for a while to see if it comes back
- 2If the audio module has been changed, find out whether a software load was carried out at that time. The load is done by a workshop
- 3Check that the audio module connectors are seated firmly and not corroded
- 4If the code persists after the software is loaded, replacing the audio module may be needed. A workshop should carry that out
Symptoms you may notice2
- No sound from the loudspeakers
- The headphones are not functioning
General guidance for car owners. Diagnosis on the car can point to a different cause.