Diagnostic Trouble Code (DTC) Information ICM-1A54

Condition 

Fig 1: Identifying Subwoofer Module (SUB)

Courtesy of VOLVO CARS CORPORATION

The infotainment control module (ICM) checks the communication with the Subwoofer module (SUB).

Diagnostic trouble code (DTC) ICM-1A54 is stored in the infotainment control module (ICM) if it registers a fault in the communication with the Subwoofer module (SUB).

Diagnostic trouble code (DTC) ICM-1A54 can be detected when the ignition is on for at least 20 seconds and the battery voltage is > 11 V.

Substitute Value 

• None.

Possible Source 

• Internal fault in the subwoofer module (SUB)
• No subwoofer module (SUB).

Fault symptom[s] 

• No sound from the bass speaker.