VOLVO
IHU-U300362 - Battery Voltage. Algorithm Based Failures. Signal compare failure
System
Infotainment Head Unit (IHU)
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?
This code is a comparison fault for the battery voltage in the infotainment head unit (IHU). It only needs to be dealt with if it stays active for a long time during the current drive and functions do not work. Otherwise it does not indicate a fault and can simply be cleared.
Possible causes
- Contact resistance in the connections
- A damaged supply wire
What you can do
- 1Clear the code and check whether it returns during a drive
- 2Check that the battery is in good condition and that its terminals are firmly connected
- 3Check that the fuses are intact
- 4Check that the connectors in the supply wiring to the head unit are firmly seated and free from oxidation
- 5If the fault returns and functions still do not work, have a workshop trace the power supply to the head unit
Symptoms you may notice2
- The mobile phone does not work
- The audio unit does not fully work
General guidance for car owners. Diagnosis on the car can point to a different cause.