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Home >> Hyundai >> 2021 >> Elantra N Line, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Automatic Transaxle System Diagnosis - 2.0L (Except HEV)) >> DTC P0721-00: Secondary Pulley Speed Sensor Circuit Range/Performance >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting Condition

WARNING: This page is about a different variant/trim than selected.
Trouble shooting Prerequisite condition Possible Cause
Main action
  • Monitor the output shaft speed sensor signal
  1. Poor contact of connector
  2. Faulty output shaft speed sensor circuit
  3. Faulty output shaft speed sensor
Prerequisite condition
  • Battery voltage: 10V or more
  • Engine RPM: 350 or more
  • Vehicle speed: 50 km/h or more
  • Shift lever switch: "D" or "Sports" (Forward gear)
  • Shift lever oil temperature: -10°C or more
Threshold Value
  • Output shaft speed sensor's vehicle speed: less than the calculated value (=vehicle speed * 0.3) or higher than the calculated value (=vehicle speed * 1.7).

    ex) Vehicle speed: 50 km/h, -> less than 15 km/h or higher than 85 km/h)
Detecting Time
  • 6 sec
MIL ON Condition
  • 2 driving cycles
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