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Pulled code P1633, which is apparently "Throttle Valve Adaptation". Not sure if it was caused by this event. The check engine / SES light did NOT illuminate.
When it happened, I figured the most likely thing was that the car thought the clutch was engaged to the driveline, and completely flipped out when the engine revved without any of the wheels spinning faster. E.g., detecting a fault in the wheel speed sensors. If that is true, it shouldn't come back, but I thought it was an odd choice of lights to display in this situation.
That said, maybe I need to do something about P1633? Two days at the track coming up in less than two weeks...
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