06 Lefeng throttle circuit

P0507. This fault code means that the algebraic engine control is higher than expected. The possible reason is that there is too much carbon deposit at the throttle position. Or behind the throttle. There is air leakage. The computer will detect that the idle speed is higher than the expected idle speed. It will light the fault light. What you can check is whether the throttle is thoroughly cleaned during the cleaning process. Fuck. Is there any possibility of carbon deposition here? Clamp the idle motor in the wide opening position. Then second, when we install the throttle, should we check whether the sealing ring at the back is installed? Is there any air leakage?