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OBD II Fault Code

  • OBD II P0C73

OBD-II Code High voltage control module failure is defined as a Motor Electronics Coolant Pump "A" Control Performance

The Inverter/Converter Assembly has its own water pump for its cooling system. This water pump is electronically controlled and monitored by the Power Management Control Module (HV CPU). If the HV CPU detects failure of the water pump, code P0C73 will be set.

High voltage control module failure Symptoms

  • High voltage system temperature light may be illuminated

Common Problems That Trigger the P0C73 Code

  • High voltage control module failure
  • Inverter/converter water pump failure
  • Wiring issue
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