VOLVO
ICM-1F34 - VOLUME knob. Faulty signal
System
Infotainment Control Module (ICM)
Volvo models this fault code applies to
Applies to the following models:
1 modelXC90 (2003–)
Show models by year and engine (1)
What does this fault code mean?
The ICM checks whether the VOLUME knob's switches give the same signal. The fault code is set when the same signal is registered from the switches, and the knob then does not work.
Possible causes
- Short circuit between the switches in the VOLUME knob
What you can do
- 1Turn the VOLUME knob and see whether the volume changes smoothly in the audio system
- 2Read the code, clear it and check whether it returns after a test drive
- 3Check that the connectors to the VOLUME knob are secure and free from corrosion
- 4If the fault remains, have a workshop check the VOLUME knob and the infotainment control module (ICM) with diagnostic equipment
Symptoms you may notice1
- The VOLUME knob does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.