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Home >> Kia >> 2024 >> Telluride SX X-Line >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle System Diagnosis >> DTC P0721-00: Output Speed Sensor Circuit Range/Performance >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Voltage monitoring
  • Poor connector connection
  • Faulty OSS circuit
  • Faulty OSS
Enable Condition
  • Battery voltage is higher than 10V
  • Engine speed higher than 400 RPM
  • Vehicle speed is higher than 50 km/h (31 mph)
  • Shift lever position in "D" or "Sports" (forward gear)
Threshold Value
  • Vehicle speed equivalent to output speed is less then vehicle speed * 0.3 or higher than vehicle speed * 1.7 (ex. Less than 15 km/h (9 mph) or higher than 85 km/h (53 mph) when vehicle speed is 50 km/h (31 mph))
Fail Safe
  • Prior to fault confirm: gear fixed at current range, output speed back-up signal is fixed at 5th gear
  • After fault confirm: manual gear shift from 2nd to 5th is allowed

Gear is fixed at 5th gear at "D"
Output speed back-up signal output adaptive
Learning is prohibited
Detecting Time
  • 6s
MIL ON Condition
  • 2 driving cycles