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Home >> Kia >> 2023 >> Sorento Plug-In Hybrid SX Prestige >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> HEV Battery System Diagnosis (PHEV) (2 Of 2) >> DTC P1B77-00: Inverter Capacitor Precharging Fault >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Due to recharging failure, Prevent the error of the relay control logic
  • Detect the loss of hybrid function caused by the disability to input high voltage
  • Main relay
  • Precharge relay
  • The wire harness between hybrid battery module and BMS
  • BMU
  • MCU
Enable Condition
  • Ignition "ON"
  • Auxiliary battery normal voltage (9 to 16V)
Safety Mode Power Derating Charge Power Limit
  • 0%
Discharge Power Limit
  • 0%
BMS State
  • Ready, fault
Relay Control
  • OFF
Service Lamp ON Condition
  • 2 driving cycles
OFF Condition
  • Ignition "OFF"
Set DTC
  • 2 driving cycles
Warning Lamp
  • ON