Diagnostic Trouble Code (DTC) Information Sub-U200398

Condition 

Subwoofer module (SUB) checks the temperature at the transmitting diode in the MOST-connector.

The diagnostic trouble code (DTC) is stored if the control module detects that:

• The temperature is too high.

The control module's test for the diagnostic trouble code (DTC) starts in the event of:

• Activated control module.

Fig 1: Identifying Subwoofer Module (SUB)

Courtesy of VOLVO CARS CORPORATION

Substitute Value 

• Switched off control module.

Possible Source 

• Ambient temperature too high.
• Power consumption too high in the control module.
• Damaged subwoofer module (SUB).

Fault symptom[s] 

• Audio other/Other audio problems
• No sound from subwoofer