VOLVO
PHM-000D - Handset microphone. Signal too low
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:
5 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013), XC90 (2003–)
What does this fault code mean?
The phone module (PHM) detects that the microphone signal in the handset is in contact with ground, and then the handset does not work.
Possible causes
- The microphone cable from the handset is shorted to ground
What you can do
- 1With the ignition off, check that the connectors to the handset and the phone module are secure and clean
- 2Look for chafing or pinching on the microphone cable
- 3Use a multimeter to check that the cable has no contact with ground (the body)
- 4If you find no fault in the cable, you can try replacing the handset
Symptoms you may notice2
- The handset does not work
- Message in the text display, on cars with Volvo On Call
What the fault can affect1
- Only hands-free works
General guidance for car owners. Diagnosis on the car can point to a different cause.