Reader Upload Request: x7F negative response code error
#1
Reader Upload Request: x7F negative response code error
Using HP Tuners. Just got my new set up and got this error message when I tried to plug in to my 2000 Corvette FRC just now.
Reader Upload Request: x7F negative response code error
Any help would be appreciated.
Thanks.
-Ray
Reader Upload Request: x7F negative response code error
Any help would be appreciated.
Thanks.
-Ray
#3
X7F negative response is as far as i can tell is either lack of voltage to the ECM or interference to the ECM from such things as the radio , body control computer (doors open and such) or aftermarket radio adapters or in my case not having the ecm totally(there are multiple pink ignition wires that need 12V) powered up on the run stand . I hope this helps someone