VOLVO
ICM-U01844A - Lost Communication With Audio module. 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 the integrated audio module (IAM) is kept in the CEM and compared at start-up. If the IAM is not on the approved list, the Infotainment Theft Protection (ITP) function blocks it, and the radio and CD player stop working. The code is set when the infotainment control module (ICM) registers this mismatch.
Possible causes
- Fitting an integrated audio module that the CEM list does not approve
- Software not loaded when the audio module was changed
- 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 integrated audio module was recently changed, 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, clear it and see whether it returns
- 4If the fault remains after the software download, the integrated audio module may need replacing. A workshop should assess this and check that the unit is accepted by the system
Symptoms you may notice2
- The radio does not work
- The CD player does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.