What Does P0638 Code Mean?

OBD-II Code P0638 is defined as a Throttle Actuator Control Range/Performance

The engine computer (PCM) monitor the movement of the throttle body to verify that it matches its commanded position. If the throttle body fails to move as requested, code P0638 will be set.

P0638 Symptoms

  • Decreased engine performance

Common Problems That Trigger the P0638 Code

  • Powertrain Control Module (PCM) failure
  • Throttle body assembly failure
  • Wiring issue
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1 User Comment

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By , September 06, 2018
Wat wiring issues are connected with p0638 on a 2006 93 saab 4 cylinder 2.0 turbo sedan