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Home >> Kia >> 2016 >> Forte EX >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle System Diagnosis >> DTC P0721: Output Speed Sensor Circuit Range/Performance >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Rationality check
  1. Performandce error
  2. Output speed sensor
  3. PCM/TCM
Enable Conditions
  • TR switch is "D" range
  • Vehicle Speed by input speed sensor is above 50km/h (31.1mi/h)
  • Engine speed is above 400rpm
  • Battery voltage is above 10V
Threshold value
  • Vehicle speed * 1.5 is below output speed 0rpm
  • Output speed 0rpm is below vehicle speed * 0.5
Detecting Time
  • More than 5 sec.
Fail safe
  • Locked into 4th gear
  • Between 2 and 4 ranges are possible at sports mode
  • Teaching not allow
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