Question on ECM parameter change

If this is a MaxxForce engine, they are all programmed by factory with this feature. Unless there is a switch in the dash for regen inhibit, there should be no effect on the engine, nore will it inhibit the engine from reneging without a dash switch input. When there is a dash switch that has been enabled for a length of time, there is usually a fault code in the ECM to let you know it has been active. So i do not believe this is your problem.

Do you have the last 8 of the VIN?

 

I'd have to look at a list of Parameters at work while connected to a truck. The list I have here is just basic regular stuff. I do know there are a couple that will prevent a regen if you are using cruise control or PTO mode. We have had some that we have programmed out the inhibit feature with no issues. I do not believe that should ever cause a no regen problem. As for how it happened, your guess is as good as mine.