I have a TST box on my truck the since new I have 100k on truck now and everyonce in a while the the egt flashes 1769. I currently do not have the egt gauge hooked up. Any ideas whats causing this.
thanks
brian

 

Mine took a dump a year ago it had corrosion inside the box on the circuit board caused a no start condition. I sent it in and they told me it was dead with no fix but to replace it. I never did. Hope you have better luck.

 

That's the beauty of the programmers. No plumbing.