VOLVO
AUD-B1A0712 - Speaker #7. General Electrical Failures. Circuit short to battery
System
Audio Module (AUD)
Volvo models this fault code applies to
Applies to the following models:
9 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
The subwoofer has two speaker elements, SUB 1 and SUB 2, each driven by its own channel. The audio control module (AUD) has registered too high a signal on the wiring to element SUB 1, usually because that wire is shorted to supply voltage. The code is set while the module is active, and bass from that element is lost.
Possible causes
- Short circuit to supply voltage in the wiring from element SUB 1 to the audio module
What you can do
- 1Check that the audio system fuses are intact and see where they are located in the owner's manual
- 2Check the connectors at the subwoofer and at the audio module for contact resistance, play and oxidation
- 3Look for chafing and places where the wire could have touched a live circuit
- 4Read the signal to element SUB 1 with diagnostic equipment and repair the short to supply voltage
Symptoms you may notice2
- No sound from the subwoofer
- Front and rear parking assistance does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.