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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 93 (Battery Management System Diagnosis (HEV)) >> DTC P0BC5: Hybrid Battery Temperature Sensor 'E' Circuit High >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Prevent deterioration of battery caused by high temperature
  • Prevent accident caused by high temperature of battery
  1. Faulty Hybrid battery pack
  2. Poor connection or open in harness or connector between battery module and BMS
  3. Faulty temperature sensor No. 4 (D)
  4. Open in temperature sensor No. 5 (E) circuit
  5. Power short in temperature sensor No. 5 (E) circuit
  6. Faulty Fan Module
  7. Faulty BMS ECU
Detecting Method
  • Hybrid Battery Temperature Sensor 'E' detect as threshold value for more than 5 sec.
Enable Condition
  • Ignition ON Auxiliary battery volts between 9V and 16V
Threshold value
  • Hybrid Battery Temperature Sensor 'E' is lower than -45°C (-49°F)
DTC Release Condition
  • Hybrid Battery Temperature Sensor 'E' is higher than -45°C (-49°F)
Service Lamp ON Condition
  • In case of 2 time DC (Driving cycle: ST ON ~ IG OFF 2 time)
Service Lamp "OFF" Condition
  • In case of satisfying release condition
Safety Mode
  • Normal High voltage: Main relay ON
  • BMS available POWER: Power Directing