[Z06] Random P0128 Code on 2003 C5Z
I ran the DIC and this code came on throwing a CE light. Car runs and drives normally.
After some reading I found this might be common for those running 160 degree thermostats? My car has MS4 cam, 160 thermo, callaway intake and kooks headers etc.
The code seems to indicate the car did not warm up fast enough for the PCM's liking.
i cleared the code and drove a few times and it has not come back.
Just curious to see who else this has happened to.



