Diagnostic Trouble Code (DTC) Information PHM-E010

Condition 

Fig 1: Identifying Phone Module (PHM)

Courtesy of VOLVO CARS OF NORTH AMERICA.

The diagnostic trouble code (DTC) is stored if the supply voltage to the phone module (PHM) differs by more than 2.5 V from the supply voltage to the central electronic module (CEM).

The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on (not key position 3) and when the battery voltage is 9-16 V.

Substitute Value 

• None.

Possible Source 

• Half-burned fuse for the phone module (PHM)
• Defective wiring
• Internal fault in the phone module (PHM).

Fault symptom[s] 

• No or reduced carphone functionality.