|
I had both these failures, EGR and SCR metering valve. However, neither one by itself triggered a limp mode.
At another time I was getting non-stop limp mode, car was non-drivable. Codes were 474C and 4530. Problem was a vacuum leaks, one leak was on hose to EGR valve actuator and another one at a hose for a turbo actuator. Problem was fixed by replacing the vacuum hoses.
|