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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 48 (Engine Control System Diagnosis - 2.0L (3 Of 3) (Except HEV)) >> DTC P0638: Throttle Actuator Control Range/Performance (Bank 1) >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

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Item   Detecting Condition Possible Cause
Case 1 DTC Strategy
  • TPS adaptation condition check
  1. Poor connection or damaged harness
  2. Faulty ETC Motor
  3. Faulty TPS
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 setpoint is greater than 0.3 V
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 position setpoint is greater than 0.3 V
Diagnosis Time
  • 1.2 sec.
MIL On Condition
  • 1 Driving Cycle
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