Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Volvo C70 AutomaticFACTORY OEM SERVICE PROCEDURE
Phone Module (PHM) DTCS
PHONE MODULE (PHM) - DTC INDEX
| DTC | Description |
|---|---|
| PHM-0008 | Reserve microphone. Signal too high/Signal missing |
| PHM-000A | Reserve microphone. Signal too low |
| PHM-000B | Handset cradle. Signal too high/Signal missing |
| PHM-000D | Handset microphone. Signal too low |
| PHM-000F | Handset loudspeaker. Signal too high/Signal missing |
| PHM-0010 | Handset loudspeaker. Signal too low |
| PHM-0012 | Handset supply. Signal too low |
| PHM-0013 | Control module. Internal fault |
| PHM-0014 | Carphone antenna. Signal too high/Signal missing |
| PHM-0015 | Control module. Internal fault |
| PHM-0020 | Handset microphone. Signal too high/Signal missing |
| PHM-0022 | Handset supply. Signal too high |
| PHM-0030 | Reserve battery. Voltage too low |
| PHM-003A | Internal antenna. Signal missing |
| PHM-0040 | SIM card. Internal fault |
| PHM-0063 | Lighting switch. Signal too high/Signal missing |
| PHM-0064 | Lighting switch. Signal too low |
| PHM-0065 | Volvo On Call switch. Signal too low or signal missing |
| PHM-0066 | Volvo On Call switch. Signal too high |
| PHM-0067 | Reserve battery, not connected |
| PHM-0068 | SIM card holder. Signal missing |
| PHM-006B | Control module memory fault. Internal fault |
| PHM-006C | Handset cradle. Signal too low |
| PHM-0070 | Control module. Incorrect software |
| PHM-0080 | Volvo On Call switch. Incorrect keypad installed |
| PHM-0082 | Volvo On Call switch. Activated too long |
| PHM-0090 | Control module. Incorrect software |
| PHM-E001 | Control module communication. Fault in software |
| PHM-E003 | Configuration fault. Software fault |
| PHM-E010 | Power supply. Faulty signal |
| PHM-XXXX | Unknown diagnostic trouble code (DTC) for the current control module version |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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