Variable Charge Motion Actuator (VCMA) is used for the adjustment of automotive flap and it is operated with two positions open and closed. It makes swirl among intake air to reduce emission under cold start condition. This is worm gear driver type which doesn't guarantee restoring to limp home position in the case of loss of current supply. (This doesn't have mechanical return force due to no return spring.)
Problem ---- intake manifold runner performance bank 1--
http://www.autocodes.com/p200a.html 2010 Santa Fe Check Engine Light On http://www.aboutautomobile.com/DTC/P200A
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