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.
2009 Volvo C70 AutomaticFACTORY OEM SERVICE PROCEDURE
Audio Module (AUD) DTCS
AUDIO MODULE (AUD) - DTC INDEX
| DTC | Description |
|---|---|
| AUD-0001 | Control module. Internal fault |
| AUD-0002 | Loudspeaker left front. Signal missing |
| AUD-0003 | Loudspeaker right front. Signal missing |
| AUD-0004 | Loudspeaker left rear. Signal missing |
| AUD-0005 | Loudspeaker right rear. Signal missing |
| AUD-0006 | Loudspeaker left front. Short-circuit to ground |
| AUD-0007 | Center loudspeaker. Short-circuit to ground |
| AUD-0008 | Loudspeaker right front. Short-circuit to ground |
| AUD-0009 | Loudspeaker left rear. Short-circuit to ground |
| AUD-000A | Loudspeaker right rear. Short-circuit to ground |
| AUD-000B | Loudspeaker front. Signal too high/signal too low |
| AUD-000C | Loudspeaker rear. Signal too high/signal too low |
| AUD-000D | Control module. Over heated |
| AUD-000E | Microphone terminal. Signal missing |
| AUD-000F | Microphone terminal. Signal too high |
| AUD-0010 | Microphone terminal. Signal too low |
| AUD-001B | Configuration fault. Software fault |
| AUD-001C | Centre loudspeaker. Signal missing |
| AUD-001D | Control module. Internal fault |
| AUD-001E | Control module. Internal fault |
| AUD-001F | Control module. Internal fault |
| AUD-0020 | Control module. Internal fault |
| AUD-0021 | Control module. Internal fault |
| AUD-0022 | Control module. Internal fault |
| AUD-0023 | Loudspeaker front. Shorted |
| AUD-0024 | Loudspeaker rear. Shorted |
| AUD-0025 | Control module. Internal fault |
| AUD-0025 | Loudspeaker left front. Faulty signal |
| AUD-0026 | Loudspeaker right front. Faulty signal |
| AUD-0027 | Loudspeaker left rear. Faulty signal |
| AUD-0028 | Loudspeaker right rear. Faulty signal |
| AUD-0029 | Loudspeaker left front. Signal too high |
| AUD-002A | Loudspeaker right front. Signal too low |
| AUD-002B | Loudspeaker left rear. Signal too low |
| AUD-002C | Loudspeaker right rear. Signal too low |
| AUD-002D | Loudspeaker left front. Signal too high |
| AUD-002E | Loudspeaker right front. Signal too high |
| AUD-002F | Loudspeaker left rear. Signal too high |
| AUD-0030 | Loudspeaker right rear. Signal too high |
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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