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Home › Hyundai › 2017 › Azera Base › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (1 Of 3) › DTC P0121: Throttle Position Sensor 1 Signal Circuit Range/Performance › General Information › DTC Detecting Condition

General Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Determines if TPS#1 disagrees with TPS#2
  1. Poor Connection
  2. Open or short in TPS circuit
  3. Faulty TPS
  4. Faulty PCM
Enable Conditions
  • Ignition "ON"
Threshold value
  • Difference between average values of TPS1 and TPS2 > 8%
Diagnosis Time
  • Continuous
MIL On Condition
  • 1 Drive Cycle
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