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Home >> Kia >> 2023 >> Sorento Plug-In Hybrid SX Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 22 (Automatic Transaxle System Diagnosis (PHEV) (2 Of 2)) >> DTC P1784-00: EOP 3-Phase Wiring Line Open >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

WARNING: This page is about a different car, the 2024 Kia Sorento. However, it is still accessible from the selected car via links, so may be relevant.
Item Detecting Condition Possible Cause
DTC Strategy
  • Circuit monitoring
  • EOP/OPU 3-Phase connector contact inferiority or backed out terminal
  • EOP/OPU EOP 3-Phase wiring is open or short
  • Faulty OPU
  • Faulty EOP
Enable Condition Case 1
  • Low voltage auxiliary battery is between 9V and 16V
  • OPU input high voltage is over 80V
  • EOP running command is over 100 RPM
Case 2
  • Low voltage auxiliary battery is between 9V and 16V
  • OPU input high voltage is between 230V and 300V
  • EOP running speed is between 800 RPM and 3500 RPM
  • ATF temperature is higher than 0°C (0°F)
Case 3
  • Low voltage auxiliary battery between 9V and 16V
  • OPU input high voltage between 230V and 300V
Threshold Value Case 1
  • EOP stop (0 RPM) and OPU input current is below 0.5A
Case 2
  • OPU control duty is more than 1.6 times than normal duty
Case 3
  • OPU control duty is maximum
Detecting Time Case 1
  • 1.5s
Case 2, 3
  • 8s
Fail Safe
  • Case 1: Drive prohibition/Case 2, 3: Gear "R" torque limited
MIL ON Condition
  • 1 driving cycle