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Home >> Kia >> 2008 >> Sorento Base, A5SR2 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transaxle System) >> Automatic Transaxle System >> DTC P0734 Gear 4 Incorrect Ratio >> DTC Detecting Condition

DTC P0734 Gear 4 Incorrect Ratio: DTC Detecting Condition

WARNING: This page is about a different variant/trim than selected.
DTC DETECTING CONDITION POSSIBLE CAUSE

Item Detecting Condition Possible cause
DTC Strategy
  • 4th gear incorrect ratio
  • Faulty input speed sensor
  • Faulty output speed sensor
  • Faulty internal transmission
Enable Conditions 
  • Engine speed > 600 RPM
  • 150 RPM > Output speed < 6000 RPM
  • Lever Position = "D"
  • Input speed > 600 RPM
  • A/T oil temp output ≥ -10°C
  • Throttle opening > 15%
  • The time after the last shift was finish > 1sec
Threshold value 
  • | Input speed - output speed x 4th gear ratio | ≥ 200 RPM
Diagnostic Time 
  • More than 1sec
Fail Safe 
  • 4th gear Limp-Home mode
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