VOLVO
PHM-B117A11 - Back-up microphone. General Electrical Failures. Circuit short to ground
System
Phone Module (PHM)
Volvo models this fault code applies to
Applies to the following models:
3 modelsS80 (2007–), V70 (2008–), XC70 (2008–)
Show models by year and engine (3)
What does this fault code mean?
The telephone module (PHM) monitors the internal back-up system, which consists of the back-up microphone, the speaker, the SIM card reader, the battery and the antenna. The fault is stored when the back-up microphone is short-circuited to ground. The fault affects Volvo On Call and lies within the telephone module's back-up system.
Possible causes
- The back-up microphone is short-circuited to ground
What you can do
- 1Check the fuses in the fuse box. Their locations are shown in the owner's manual or on the cover of the box
- 2Test Volvo On Call, for example with a test call, to see whether the fault is still present
- 3Clear the code and check whether it returns after a road test
- 4If it returns, a workshop with diagnostic equipment should check the back-up microphone
Symptoms you may notice2
- Text window and warning symbol with a text message
- Volvo On Call does not work as it should
General guidance for car owners. Diagnosis on the car can point to a different cause.