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Home >> Kia >> 2017 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) (PHEV) >> DTC P2601-00: Coolant Pump 'A' Control Circuit Range/Perfromance >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
Case 1 DTC Strategy
  • Check motor torque_Dry run (Low load)
  1. Coolant quantity
  2. Poor battery
  3. Poor Connection
  4. Short to power in signal circuit
  5. Open in ground circuit
  6. Faulty EWP
Enable Conditions
  • Motor speed is faster than 2, 000 RPM
  • Battery voltage is between 9V and 16.5V
  • Torque is lower than 0.0251Nm
Threshold Value
  • Coolant quantity is low
Diagnosis Time
  • 5s
MIL ON Condition
  • 2 driving cycles
Case 2 DTC Strategy
  • Check motor torque (Over load)
Enable Conditions
  • Battery voltage is between 9V and 16.5V
  • Torque is higher than 0.58Nm
Threshold Value
  • Coolant quantity is too much
Diagnosis Time
  • 1s
MIL ON Condition
  • 2 driving cycles
Case 3 DTC Strategy
  • Check motor speed
Enable Conditions
  • Battery voltage is between 11V and 16.5V
  • The difference between target speed and actual speed is greater than 5%
Threshold Value
  • Pump rotation speed error
Diagnosis Time
  • 5s
MIL ON Condition
  • 2 driving cycles