If a malfunction occurs in the Electronic Throttle Control(ETC) system, the PCM/ECM will control the engine from predetermined data stored in its memory or stop the engine if a safety problem is anticipated,as an Emergency Operation(Limp-Home)mode. The purpose of Limp-Home mode is to control the engine as close as possible to normal engine operation if a malfunction occurs. When the DTC related to ETC system is recorded by the PCM/ECM, then this DTC will be set. This DTC only indicates malfunction related to ETC system has occurred and engine is in Limp-Home mode. DO ALL REPAIRS associated malfunction with ETC system.