VOLVO
ICM-1A5D - Communication With Accessory USB Unit (AUU) Signal missing
System
Infotainment Control Module (ICM)
Volvo models this fault code applies to
Applies to the following models:
6 modelsC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013), XC90 (2003–)
What does this fault code mean?
The infotainment control module (ICM) watches the link to the accessory USB unit (AUU). The fault code is set when a communication fault occurs there, and the USB accessory then stops working.
Possible causes
- A fault inside the accessory USB unit (AUU)
- The accessory USB unit (AUU) is missing
What you can do
- 1Read the code, clear it and check whether the USB accessory works after a test drive
- 2Check that the audio system fuses are intact; the location of each fuse is in the owner's manual or on the cover of the fuse box
- 3Have a workshop check with diagnostic equipment that the accessory USB unit (AUU) is fitted and responds
- 4If the fault is permanent, have a workshop replace the accessory USB unit (AUU)
Symptoms you may notice1
- The USB accessory does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.