What does the p2 176 fault code of Suzuki Tianyu Engine stand for?

Changan Suzuki Tianyu car fault code "P2 176 is a throttle control system fault-idle speed can not learn". If the fault code appears after the accelerator is removed for other reasons, the testing instrument needs to be re-equipped. If the throttle is really dirty, it needs to be removed for cleaning, installation and re-matching. If none of the above is true, it is necessary to carefully check what circuit problems have occurred in the car according to the fault code.