Hi, The codes I have are below. CECU Not Customized to Vehicle SPN 1787 2791 3480 3821 I replaced the EGR Value. Im trying to use my OTR performance Diagnostic tool/software, to clear the EGR Codes. Am I missing something.
Yup need paccar to actully program it with a davie4. The EGR is an emissions thing and pretty heavily locked down in the computer. Im having mine done now and my software cant do diddly with it.