VOLVO
PHM-0065 - Volvo On Call buttons 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:
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 phone control module (PHM) measures the voltage across the SOS On Call switch, and the code is set when the voltage is too low. The cause is a short circuit to ground in the wiring of one of the two switches. Volvo On Call does not work, and a warning symbol appears.
Possible causes
- Short circuit to ground in the wiring of the SOS or On Call switch
What you can do
- 1Check that the fuses for the telephone system are intact
- 2Test the SOS and On Call buttons in the car to see whether they respond
- 3Read and note the code before clearing it, so the workshop can see it
- 4Have a workshop with diagnostic equipment check the switches and correct the short circuit to ground
Symptoms you may notice3
- Volvo On Call does not work
- Other Volvo On Call problems
- A warning symbol and a text message appear
General guidance for car owners. Diagnosis on the car can point to a different cause.