Cat C-15 code?
 

I have a fault code 128:F08 PID084_P. Anyone know what this is before I go to the service desk at the dealer and ask. It's on an 2004 International with Cat C-15 500hp. Engine serial #MBN08897

Where did you get that code ?

What code comes out when you hold the cruise button down? count the blinks

That code came from the dash readout. The one you can scroll though, miles, trip meter, instant economy, fault codes, etc. It is the last one, it says fault codes. If you hold the button down( the one you scroll with) it will show the code. It goes away when truck is restarted or when key is turned off then back on. Only happened about 3 times.

When you hold the cruise button down, the check engine lite will blink out a code also.

5 and 5 is normal, does it blink out another sequence? If it does you (or I ) could look them up in the Cat book (if you have one)

I don't have the Cat readout so I am not familiar with those codes that you have.

I did the cruise thing. It blinks 3 times , pause, then 6 times.

The flash code chart for that engine serial number (from the Cat SIS website) states flash code 36 would be a problem with the vehicle speed sensor. Out of range, rate of change or signal invalid.

Thanks.