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.
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HOMESERVICE MANUALSVOLVO2004V70 L5-2.4L VIN 64 B5244S6REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSAUM CODES (AUDIO MODULE)AUM-45FFPERMANENT FAULTNOT CONNECTED OR COMMUNICATION PROBLEMS. PERMANENT FAULT
2004 Volvo V70 L5-2.4L VIN 64 B5244S6
Not Connected or Communication problems. Permanent Fault
2004 Volvo V70 L5-2.4L VIN 64 B5244S6SECTION Not Connected or Communication problems. Permanent Fault
Not connected or communication problems. Permanent fault
Replace the head unit / audio module
An internal fault has occurred in the cassette player.
Caution! New head unit / audio control modules are supplied without software. The head unit / audio control module must be programmed after it has been replaced.
Other information:
- For information about programming and replacing the head unit / audio control module see Radio/telephone, changing Service and Repair.
Continue - Verification
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Verification
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reinstall connectors, components etc.
- Ignition on.
Check that cassette player functions.
Does the cassette player function?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFIED - Fault Found
VERIFICATION FAILED - Fault-tracing information
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Fault-tracing information
Information
Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.
Do you want to exit fault-tracing?
Yes - FAULT-TRACING FAILED
No - Attempt New Test
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FAULT-TRACING FAILED - FAULT-TRACING FAILED
Attempt New Test - Replace the head unit / audio module
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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.