BMW 2001 series3 E46 318i DME error 2786 throttle valve potentiometer (P0121) diagnosis
Car drive in to limp home mode and other shop tried to diagnose it and failed. Six month ago new ECM and new throttle body has been replaced, car was fixed for months and again EML is lit and go to the limp mode. Here we diagnose that fault in our way. Just watch it.