1J536

I just bought a 2004 4.6 150. The PO said the reason the LCD on the dash shows TRANS FAULT is because he had a shift kit installed. I figure the shift kit part is true because it shifts like it. But does a shift kit cause a TRANS FAULT indicator?

DarrinT04

could have the PCM confused because the parts installed from the shift kit, the PCM isn't programmed for