VOLVO
PHM-0022 - Handset supply. Signal too high
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 supply to the carphone handset is too high. This can come from the supply wire being short-circuited to supply voltage. The handset does not work, but hands-free still operates, and a message appears in the text display on cars with Volvo On Call.
Possible causes
- The carphone handset receives too high a supply voltage, for example from a short circuit to supply voltage in the supply wire
What you can do
- 1Read and note the code, clear it and road test the car to see whether it returns
- 2Check that the handset connector is firmly seated and free from corrosion
- 3If no fault is found in the supply wire, have a workshop try replacing the handset
Symptoms you may notice2
- The carphone handset does not work
- Text message in the display, only where the phone module (PHM) runs Volvo On Call
What the fault can affect1
- Only hands-free operates
General guidance for car owners. Diagnosis on the car can point to a different cause.