Check engine
 

hi I’m driving a outlander 2009 I’ve been experiencing a check engine last feb.11 and my car is in idle mode and as I turn off my car and waited for 2hrs to restart idle mode is gone but check engine still on. When I arrived home I took my obd code reader and it says P2100 and means my throttle body is the problem. Monday morning when I start my car check engine light is off until today. Does someone know experience this?