VOLVO
PHM-0031 - GPS unit. Internal fault. Intermittent fault
System
Phone Module (PHM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
4 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007)
What does this fault code mean?
The telephone module (PHM) has at some point recorded an internal fault in the built-in GPS unit. The fault is intermittent – it has occurred but may no longer be present.
Possible causes
- Temporary internal fault in the GPS unit
What you can do
- 1Clear the code – if it does not return, no action is needed
- 2If the fault returns often, have the telephone module checked by a workshop
Symptoms you may notice1
- Message in the information display
General guidance for car owners. Diagnosis on the car can point to a different cause.