VOLVO
PHM-6911 - Handset hook 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 handset signal, meaning the cradle switch, and the code is set when it is too low. The cause is that the cradle signal wire between the handset and the control module is short-circuited to ground. The handset then does not work for calls, but hands-free does.
Possible causes
- The cradle signal wire between the handset and 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 no fault is found in the wire, have a workshop try replacing the handset
Symptoms you may notice3
- The handset does not work
- The other party cannot be heard or cannot hear 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.