Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information PHM-B117A12

Condition
The Phone module (PHM) checks the voltage supply to the spare microphone.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- The voltage of the spare microphone is greater than 0.25 V.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Ignition position 0, I and II.
- Battery voltage between 9 - 16 V.

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.





Substitute value
- None.

Possible source
- The spare microphone has a short-circuit to voltage.

Fault symptom[s]
- Cellular phone/Other cellular phone problems
- Volvo On Call/Other Volvo On Call problems
- Text window and warning symbol/Text message