VOLVO
HLDF-B100E29 - Video Input "A". General Signal Failures. Signal signal invalid
System
Unknown System / Manufacturer Specific
Volvo models this fault code applies to
Applies to the following models:
4 modelsS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (4)
What does this fault code mean?
The front display module (HLDF) is linked to the multimedia module (MMM) and reads the video signal from it. The fault code is set when the signal is incorrect. The front display then does not work.
Possible causes
- Open circuit on the signal cable
- The signal cable is shorted to earth
- The signal cable is shorted to supply voltage
What you can do
- 1Check that the fuses are intact. Their location is in the owner's manual or on the cover of the fuse box
- 2If possible, check the display's function with the controls or on a road test to see whether the fault shows
- 3Use a multimeter to check that the video cable between the display and the multimedia module has no break and is not shorted to earth or supply voltage
- 4Check the connectors at the display and the multimedia module for play and oxidation
- 5Clear the fault code and road test to see whether it returns
- 6If the wiring is intact, have a workshop with diagnostic equipment check the signal from the multimedia module
Symptoms you may notice1
- The front display does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.