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This trouble is often caused by a faulty pcm There is a TSB 18-003-07A that involves doing a Powertrain Control Module flash If the bulletin has been performed and the code continues to set, check all connections and wiring to the actuator. If all of the above test good, remove the actuator from the intake and verify that the valve is not binding or sticking inside the intake plenum. There should be very little resistance with no binding.