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Home >> Kia >> 2019 >> Optima LX >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis - 2.4L (6 Of 6) (Except HEV) >> DTC U0164-00: Lost Communication With HVAC Control Module (FATC CAN Time Out) (C-CAN) >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • CAN message monitoring
  1. Poor Connector Connection
  2. Faulty C-CAN Communication Circuit
  3. Faulty PCM
Enable Conditions
  • Engine speed higher than 32 RPM (Engine running)
  • Battery voltage higher than 10V
  • 0.5s delay time after ignition "ON"
Threshold Value
  • FATC message is not received for 500ms.
Diagnostic Time
  • 2s.
MIL On Condition
  • 2 driving cycles
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