LEMON Manuals: Even more car manuals for everyone
Home >> Hyundai >> 2009 >> Tucson GLS, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle System >> Troubleshooting for DTC >> P0734 Gear 4 Incorrect Ratio >> DTC Detecting Condition

P0734 Gear 4 Incorrect Ratio: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • 4th gear incorrect ratio
  • Faulty Input speed sensor
  • Faulty output speed sensor
  • Faulty UD clutch or 2nd brake
Enable Conditions
  • Engine speed >450rpm
  • Output speed >900rpm
  • Shift stage 4th. gear
  • Input speed >0rpm
  • A/T oil temp sensor voltage <4.5V
  • Voltage of Battery > 10V
  • TRANSAXLE RANGE SWITCH is normal
Threshold Value
  • | Input speed/4th gear ratio - output speed | ≥ 200rpm /4th. gear ratio
Diagnostic Time
  • More than 1sec
Fail Safe
  • Locked into 3rd gear.(If diagnosis code P0734 is output four times, the transaxle is locked into 3rd gear)