VOLVO
PHM-0010 - Handset loudspeaker. 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 code concerns the loudspeaker in the handset. The phone module (PHM) registers that the loudspeaker signal to the handset has a short to ground, so the handset does not work. Hands-free still works.
Possible causes
- Short circuit to ground in the loudspeaker cable, from the handset to the control module
What you can do
- 1With the ignition off, check that the connector to the handset is secure
- 2Look for chafing or pinching on the loudspeaker cable running from the handset
- 3Use a multimeter to check that the cable has no contact with ground (the body)
- 4If you find no fault in the wiring, 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.