VOLVO
ICM-U01974A - Lost Communication With Telephone Control Module. System Internal Failures. Incorrect component installed
System
Infotainment Control Module (ICM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (4)
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 Bluetooth phone module (BPM) is not on the valid list, the Infotainment Theft Protection (ITP) function blocks it and the phone function is lost. The code is set when ICM registers this mismatch.
Possible causes
- Fitting a Bluetooth phone module (BPM) that is not valid according to the list in the CEM
- Software not loaded when the 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 Bluetooth phone 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, clear it and see whether it returns
- 4If the fault remains after the software download, the module may need replacing. A workshop should assess this and check that the unit is accepted by the system
Symptoms you may notice1
- The Bluetooth phone does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.