VOLVO
PHM-001D - Handset microphone 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 signal from the handset microphone is registered as too high. The fault is intermittent, so it may have come and gone. Meanwhile the handset does not work, and a message appears in the instrument cluster.
Possible causes
- The signal from the handset microphone is too high
What you can do
- 1Check that the handset connector and the connectors at the keypad unit or carphone control module (PHM) are secure and free from corrosion
- 2Read and note the code, clear it and road test the car to see whether it comes back
- 3If it comes back, have a workshop with diagnostic equipment check the microphone wiring and correct the fault
Symptoms you may notice2
- The handset does not work
- Message in the instrument cluster that the handset is not working
General guidance for car owners. Diagnosis on the car can point to a different cause.