DC link ripple voltage very high
â–¶ How to fix
Check for ripples in the HV DC side and find the source component of ripples to rectify. Check for ripples while charging and running the AC compressor, from different charging stations.
What you'll see
No driver-visible symptom recorded.
System reaction
System will operate in warning mode. It may deteriorate the component life.
Diagnostic depth
Detection
Internal voltage sensor sees high frequency AC voltage superimposed on the DC input voltage
Possible cause
Ripples on the vehicle HVDC link. This could be because of ripples from other components connected to the DC link or VCB. Most probably, it can occur while charging and running the HVAC. The Charging station could be the source of voltage ripples.