VOLVO
PHM-0019 - Carphone box power supply. Signal too high. Intermittent fault
System
Phone Module (PHM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsS80 (1999–2006), V70 (2000–2008)
Show models by year and engine (2)
What does this fault code mean?
The power supply to the carphone box is registered as too high, and the fault is intermittent, so it may come and go. For as long as it lasts, the carphone box will not switch off normally.
Possible causes
- The power supply to the carphone box is too high
What you can do
- 1Read and note the code, clear it and road test the car to see whether it returns
- 2Check that the connectors to the carphone box and the keypad unit or carphone control module (PHM) are secure and free from corrosion
- 3If it returns, have a workshop with diagnostic equipment check the power supply to the carphone box and correct the fault
Symptoms you may notice1
- The carphone box will not switch off normally
General guidance for car owners. Diagnosis on the car can point to a different cause.