hi all, Had this light come up two weeks ago. Went into the shop and changed dosage valve. The mechanic also questioned the pump but after changing the valve and doing a regen, the code went away. Now we we have the same issue. Does anyone know what can cause it? The mechanic believes it is Engine related. he is having trouble pulling codes.
SCR Performance low, engine will derate
Discussion in 'Trucks [ Eighteen Wheelers ]' started by AlexD13, Aug 23, 2017.