VOLVO
IHU-B1D5511 - Antenna Amplifier 2 Window Antenna FM2. General Electrical Failures. Circuit short to ground
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?
The head unit (IHU) monitors antenna amplifier 2 for the FM2 window antenna. The code is stored when the voltage on the signal wire is too low, which suggests the wire between the head unit and the amplifier is short-circuited to ground.
Possible causes
- Short-circuit to ground in the wire to antenna amplifier 2
What you can do
- 1Clear the code and check whether it returns
- 2Check that the fuses are intact
- 3Check that the wiring to antenna amplifier 2 has no chafing or damage
- 4Use a multimeter to check that the signal wire to antenna amplifier 2 is not short-circuited to ground
- 5If the fault remains, have a workshop check antenna amplifier 2 and the wiring further
Symptoms you may notice1
- Poor reception on the FM frequency
General guidance for car owners. Diagnosis on the car can point to a different cause.