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Home >> Genesis >> 2021 >> G90 5.0 Ultimate, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 33 (Engine Control System Diagnosis - 3.3L (7 Of 9)) >> DTC P0638-00: Throttle Actuator Control Range/Performance (Bank 1) >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

WARNING: This page is about a different variant/trim than selected.
Item Detecting Condition Possible Cause
Case 1 DTC Strategy
  • TPS adaptation condition check
  1. Throttle stuck
  2. Open in motor circuit
  3. Faulty motor
  4. Faulty ECM
Enable Conditions
  • -
Threshold Value
  • TPS adaptation is requested, but not possible
Case 2 DTC Strategy
  • ETC Limp Home position check
Enable Conditions
  • During TPS adaptation
Threshold Value
  • Difference between Throttle sensor voltage in limp home and limp home set point is greater than 0.332V
Case 3 DTC Strategy
  • Lower mechanical stop adaptation voltage range check
Enable Conditions
  • During TPS adaptation
Threshold Value
  • Difference between Throttle sensor voltage in lower mechanical stop position and lower mechanical stop set point position is greater than 0.322V
Diagnosis Time
  • 1.2 seconds
MIL On Condition
  • 1 driving cycle

If the Main relay is inoperable with engine running, the following DTCs can set.