VOLVO
PHM-B117A15 - Back-up microphone. General Electrical Failures. Circuit short to battery or open
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) checks the back-up system inside the module, which includes the mic, the speaker, the SIM reader, the battery and the antenna. The fault is stored when the back-up microphone is short-circuited to supply voltage or has an open circuit, which can disturb Volvo On Call.
Possible causes
- The back-up microphone is short-circuited to supply voltage or has an open circuit
What you can do
- 1Start with 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, and note whether the function is still missing
- 3Clear the code and check whether it returns. If it stays, a workshop should read the telephone module with diagnostic equipment
Symptoms you may notice3
- Text window and warning symbol with a text message
- Volvo On Call does not work as it should
- Volvo On Call does not work at all
General guidance for car owners. Diagnosis on the car can point to a different cause.