- Mar 12, 2018
Does anyone know how to differentiate between a failing lpfp or hpfp from log variables? I'm having misfires I think could be fuel related, the fuel pump shadow code is sticking, and the HPFP idrive message came up. The car has been pretty sluggish, especially on hills. I will have to get off and on the throttle until I can get a decent engine load where I can push power. I have to get an injector puller before I can see leaking injectors.