VOLVO
PHM-6B11 - Handset speaker Signal too low
System
Phone Module (PHM)
Volvo models this fault code applies to
Applies to the following models:
6 modelsC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013), XC90 (2003–)
What does this fault code mean?
The carphone control module (PHM) monitors the loudspeaker signal coming from the handset, and the code is set when it is short-circuited to ground. You cannot hear the other party in the handset then, and only hands-free works. A message with a warning symbol appears in the text display.
Possible causes
- The loudspeaker cable, running from the handset to the control module, is short-circuited to ground
What you can do
- 1Read and note the code before clearing it, so the workshop can see it
- 2Check that the handset connector is firmly seated and free from corrosion
- 3If the connector is in order, have a workshop with diagnostic equipment check that the handset speaker wire has no contact with ground
Symptoms you may notice2
- The other party cannot be heard when the handset is used
- A text message appears together with a warning symbol
What the fault can affect1
- Only hands-free operates
General guidance for car owners. Diagnosis on the car can point to a different cause.