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Home >> Kia >> 2020 >> Optima SX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 31 (Dual Clutch Transmission Diagnosis - 1.6L (2 Of 2) (Except HEV)) >> DTC P0921-77: Gear 1 System Referencing Failure >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Monitoring maximum length of left/right gear shift motor1
  1. Faulty Gear Actuator1
  2. Faulty DCT
  3. Mechanical failure on gear1 Shift direction
Enable Condition
  • Gear shift motor 1 hall sensor is normal when reference point is found during engine cranking
Threshold Value
  • Maximum motion of gear shift motor 1 is less than 19.4 mm or greater than 22 mm
Detecting Time
  • 3 events
Fail Safe
  • Drive at Even gear
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