Diagnostic Trouble Code (DTC) Information PHM-U300055

Condition 

The Phone module (PHM) checks the internal components in the control module.

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

• Faulty signal configuration in the control module.

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

• Control module supplied with power.

Fig 1: Identifying Phone Module (PHM)

Courtesy of VOLVO CARS CORPORATION

Substitute Value 

• None.

Possible Source 

• Internal fault in the phone module (PHM).
• The Phone module (PHM) is not intended for this vehicle, for example a used control module with different software/hardware.

Fault symptom[s] 

• Missing or reduced functionality for Volvo On Call