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Home >> Kia >> 2020 >> Optima SX >> Repair and Diagnosis >> External Pages >> Different car >> Section 254 (Dual Clutch Transmission Diagnosis (2 Of 2) - 1.6L) >> DTC P0901-78: Clutch 1 System Reference Position Failure >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting Condition

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
Troubleshooting Condition Possible Cause
DTC Strategy
  • Check the Clutch reference
  1. Clutch 1 System Reference Position Failure
  2. Clutch 1 motor Fault
Enable Condition
  • Battery voltage is higher than 9V
Threshold Value
  • Difference value between previous reference position and current position is higher than 0.5mm
Diagnostic Time
  • 1s
Fail Safe
  • Drive at Even gear (2/4/6/R)