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.
1999 Volvo S80 BaseFACTORY OEM SERVICE PROCEDURE
Phone Module (PHM) DTCS
PHONE MODULE (PHM) - DTC INDEX
| DTC | Description |
|---|---|
| PHM-0001 | Power supply. Faulty signal. Intermittent fault |
| PHM-0001 | Power supply. Faulty signal. Permanent fault |
| PHM-0002 | Hands-free speakers. Signal too low. Intermittent fault |
| PHM-0002 | Hands-free speakers. Signal too low. Permanent fault |
| PHM-0003 | Communication with control module. Signal too high. Intermittent fault |
| PHM-0003 | Communication with control module. Signal too high. Permanent fault |
| PHM-0004 | Communication with control module. Signal too low. Intermittent fault |
| PHM-0004 | Communication with control module. Signal too low. Permanent fault |
| PHM-0005 | Communication with control module. Faulty signal. Intermittent fault |
| PHM-0005 | Communication with control module. Faulty signal. Permanent fault |
| PHM-0006 | Carphone microphone. Signal too low. Intermittent fault |
| PHM-0006 | Carphone microphone. Signal too low. Permanent fault |
| PHM-0008 | Communication with carphone box. Internal fault. Intermittent fault |
| PHM-0008 | Communication with carphone box. Internal fault. Permanent fault |
| PHM-000B | Handset microphone. Signal too low. Intermittent fault |
| PHM-000B | Handset microphone. Signal too low. Permanent fault |
| PHM-000C | Handset loudspeaker. Signal too low. Intermittent fault |
| PHM-000C | Handset loudspeaker. Signal too low. Permanent fault |
| PHM-000D | Handset loudspeaker. Signal too low. Intermittent fault |
| PHM-000D | Handset loudspeaker. Signal too low. Permanent fault |
| PHM-000E | Carphone handset switch. Signal too high. Intermittent fault |
| PHM-000E | Carphone handset switch. Signal too high. Permanent fault |
| PHM-000F | Carphone handset switch. Signal missing. Permanent fault |
| PHM-000F | Carphone handset switch. Signal missing. Intermittent fault |
| PHM-0010 | Hands-free speakers. Signal too high. Intermittent fault |
| PHM-0010 | Hands-free speakers. Signal too high. Permanent fault |
| PHM-0011 | Hands-free speakers. Signal missing. Intermittent fault |
| PHM-0011 | Hands-free speakers. Signal missing. Permanent fault |
| PHM-0012 | Hands-free speakers. Signal too low. Intermittent fault |
| PHM-0012 | Hands-free speakers. Signal too low. Permanent fault |
| PHM-0013 | ON/OFF bulb. Internal fault. Intermittent fault |
| PHM-0013 | ON/OFF bulb. Internal fault. Permanent fault |
| PHM-0014 | Carphone keypad lighting. Internal fault. Intermittent fault |
| PHM-0014 | Carphone keypad lighting. Internal fault. Permanent fault |
| PHM-0015 | Power supply. Internal fault. Intermittent fault |
| PHM-0015 | Power supply. Internal fault. Permanent fault |
| PHM-0016 | Control module. Internal fault. Intermittent fault |
| PHM-0016 | Control module. Internal fault. Permanent fault |
| PHM-0017 | Communication with carphone box. Signal too low. Intermittent fault |
| PHM-0017 | Communication with carphone box. Signal too low. Permanent fault |
| PHM-0018 | Carphone box power supply. Signal too low. Intermittent fault |
| PHM-0018 | Carphone box power supply. Signal too low. Permanent fault |
| PHM-0019 | Carphone box power supply. Signal too high. Intermittent fault |
| PHM-0019 | Carphone box power supply. Signal too high. Permanent fault |
| PHM-001A | Carphone box power supply. Signal too low. Intermittent fault |
| PHM-001A | Carphone box power supply. Signal too low. Permanent fault |
| PHM-001B | Carphone handset power supply. Signal too low. Intermittent fault |
| PHM-001B | Carphone handset power supply. Signal too low. Permanent fault |
| PHM-001C | Hands-free loudspeakers. Signal too high. Intermittent fault |
| PHM-001C | Hands-free loudspeakers. Signal too high. Permanent fault |
| PHM-001D | Handset microphone Signal too high. Intermittent fault |
| PHM-001D | Handset microphone Signal too high. Permanent fault |
| PHM-001E | Handset loudspeaker. Signal too high. Intermittent fault |
| PHM-001E | Handset loudspeaker. Signal too high. Permanent fault |
| PHM-7 | Communication with control module. Internal fault. Intermittent fault |
| PHM-7 | Communication with control module. Internal fault. Permanent fault |
| PHM-E001 | Control module communication. Faulty communication |
| PHM-XXXX | Unknown diagnostic trouble code (DTC) for the current control module version |
Factory Service Tools
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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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