P0638 Throttle Actuator Control Range/Performance B1


P0638 Throttle Actuator Control Range/Performance B1

Symptoms of a P0638 trouble code may include:

  • Check Engine Light illuminated (Malfunction Indicator Lamp) 
  • The vehicle may feel like it hesitates on acceleration

Causes of this DTC may include:

  • Pedal position sensor malfunction 
  • Throttle position sensor malfunction 
  • Throttle actuator motor malfunction 
  • Dirty throttle body Wiring harness, loose or dirty connections 
  • PCM/ECM Malfunction


Diagnostic Used



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