Hello, I am unsure about "control module" but the code 1251 refers to the small motor that controls the throttle. I have enclosed the formal description of the problem. Unfortunatley, a scanner must be hooked up to fully dignose the problem.
On-Board Diagnostics Type of diagnosis:
System reaction to a fault:
Fault handling: See "Fault diagnosis, general" for more information.
Diagnostic help A mechanical fault is preventing the throttle from closing.Check the wiring Jiggle the leads and in-line connectors at various points and in different directions to detect any intermittent breaks or short circuit in the wiring. Observe the multimeter, test lamp or diagnostic tool while doing this.Proceed to Diagnostic Procedures See: Diagnostic Procedures\Checking the Mechanical Operation of the Flap