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Home >> Kia >> 2007 >> Rondo Base >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Automatic Transaxle System (F4A42) >> Automatic Transaxle System >> DTC P0721 A/T Output Speed Sensor Circuit - Open Or Short (GND) >> DTC Detecting Condition

DTC P0721 A/T Output Speed Sensor Circuit - Open Or Short (GND): DTC Detecting Condition

DTC DETECTING CONDITION

Item Detecting Condition Possible cause
DTC Strategy 
  • Speed rationality check
  • Signal circuit is open or short
  • Sensor power circuit is open
  • Sensor ground circuit is open
  • Faulty OUTPUT SPEED SENSOR
  • Faulty PCM
Enable Conditions
  • Vehicle speed is over 31 Mile/h (50 Km/h) in D,3,2,L (A/T range switch) and SP (SPORTS MODE)
Threshold value 
  • If the output from the output speed sensor is continuously 50% lower or higher than the value calculated by vehicle speed sensor
Diagnostic Time 
  • More than 1sec
Fail Safe 
  • Locked into 3rd or 2nd gear.
  • Apply an electric current to solenoid valve
  • Manual shifting is possible (2nd → 3rd, 3rd → 2nd)
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