VOLVO
ICM-U01864A - Lost Communication With Audio amplifier. System Internal Failures. Incorrect component installed
System
Infotainment Control Module (ICM)
Volvo models this fault code applies to
Applies to the following models:
9 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
The serial number of each infotainment module is kept in the CEM and compared at start-up. If the audio module (AUD) is not on the approved list, the Infotainment Theft Protection (ITP) function blocks it and the loudspeakers fall silent. Although the code is labelled amplifier, it is the audio module that is checked.
Possible causes
- Fitting an audio module that the CEM list does not approve
- Software not loaded when the audio module was replaced
- The software download failed or was incomplete
What you can do
- 1Check that the fuses are intact. Their locations are given in the owner's manual or on the fuse box cover
- 2If the audio module was recently replaced, check that software was loaded with the change. The download is done by a workshop
- 3With a diagnostic tool, read the fault code after switching the ignition on and see whether it returns
- 4If the fault remains after the software download, the audio module may need replacing. A workshop should assess this
Symptoms you may notice2
- No sound from the loudspeakers
- The loudspeakers do not work
General guidance for car owners. Diagnosis on the car can point to a different cause.