VOLVO
PHM-0002 - Hands-free speakers. Signal too low. Intermittent fault
System
Phone Module (PHM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsS80 (1999–2006), V70 (2000–2008)
Show models by year and engine (2)
What does this fault code mean?
The fault is intermittent, meaning it is sporadic. The phone module (PHM) registers that the signal from the phone box to the hands-free speaker is short-circuited to ground, so the hands-free function does not work. The fault may be gone when you check the car.
Possible causes
- The hands-free speaker signal between the phone box and the keypad or phone module (PHM) is short-circuited to ground
What you can do
- 1Read and note the code, clear it and road test the car to see whether it comes back
- 2Check the connectors on the phone box and on the keypad or phone module for looseness and oxidation, so that they are secure
- 3Check the wiring to the hands-free speaker for chafing and pinching, and use a multimeter to check that it has no contact with ground (the body)
- 4If the connectors are clean and the wiring is sound, have a workshop with diagnostic equipment check the phone box and the phone module
Symptoms you may notice2
- The hands-free function does not work
- A message on the instrument panel says that hands-free mode is not working
General guidance for car owners. Diagnosis on the car can point to a different cause.