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actuator control range

  1. MIL Light with P0638 error code

    VW Mk6 Golf, Jetta, Beetle, Sportwagen TDI forum
    The other day out of the blue the dummy light comes on indicating my Throttle Valve Body is acting up. Drove home some 70km with no issues whatsoever except for the damn annoying Dummy light and hooked up my OBD2 to get a Po638 code P0638 Throttle Actuator Control Range/Performance B1. What the...
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