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Home >> Volvo >> 2009 >> XC70 Base >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Phone Module (PHM) And Subwoofer (Sub) Module Diagnostic Trouble Codes >> PHM-U1A4E96 Control Module Internal Power Handset Supply. Component Failures. Component Internal Failure (2009-12) >> Fault-Tracing >> Replacing A Component

Replacing A Component

The phone module (PHM) has registered an internal fault.

If the fault is intermittent, it has been registered previously but is no longer present. Intermittent faults may be due to interference upon start-up or may be another type of fault that can recur at different times. The fault is evaluated depending on how it occurs. If the fault recurs, replace the phone module (PHM).

In the event of a permanent fault, replace the phone module (PHM).

Remedy as necessary.

Other information 

Fig 1: Identifying Control Module
GLL163991Courtesy of VOLVO CARS CORPORATION