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Home >> Hyundai >> 2021 >> Elantra SE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 35 (Dual Clutch Transmission Diagnosis - 1.6L (Except HEV) (2 Of 3)) >> DTC P0921-77: Gear 1 System Referencing Failure >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting Condition

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Trouble Shooting Condition Possible Cause
DTC Strategy
  • Monitoring maximum length of left/right gear shift motor 1
  1. Faulty DCT
  2. Mechanical failure on gear 1 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 times
Fail Safe
  • Drive at Even gear (2/4/6/R)
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