What does fault code ICM-1A56 mean?

Diagnostic fault code details for ICM-1A56 (Volvo XC90 (2003–)). Repair service at OBD Tuning.

VOLVO

ICM-1A56 - Communication with the CD module (MP2). Signal missing

System

Infotainment Control Module (ICM)

Volvo models this fault code applies to

Applies to the following models:

1 model

XC90 (2003–)

Show models by year and engine (1)

Volvo XC90 (2003–)2003–2006

What does this fault code mean?

The infotainment control module (ICM) keeps watch on the link to the CD module (MP2). The fault code is set when the ICM registers a fault in communication with the CD module, and it shows up as the CD player producing no sound.

Possible causes

Internal fault in the CD module (MP2)
The CD module (MP2) is missing

What you can do

1Read the code, clear it and play a CD to see whether sound returns
2Check that the audio system fuses are intact; fuse locations are listed in the owner's manual or on the cover of the fuse box
3Have a workshop check with diagnostic equipment that the CD module (MP2) is fitted and responds
4If the fault is permanent, have a workshop replace the CD player

Symptoms you may notice1

No sound from the CD player

General guidance for car owners. Diagnosis on the car can point to a different cause.