Detroit 60 series engine protection

Have a 2004 Freightliner Columbia with 12.7 DDEC 4. The red engine protection light comes on every so often after the truck gets to around 60. No response at the pedal but engine remains running. After you slow down eventually you can take off again. The truck does not show any codes when the light comes on and none show up on inactive while this or right after this occurs. I did find an inactive code before I started working on it for 1 occurrence of Sid 21 fmi 0 missing timing Pulse. And later another of Sid 21 fmi 1. Would that code make the engine protection light come on and not flash a code when it happens? I have only been able to get the light to come on once during my road tests but the owner said the driver was having big issues. I would think if it was th timing sensor I would have multiple occurrences.

 

I think that Williams Detroit finally got it fixed. AFTER they installed a new ECM, the TRS and SRS sensors, and a wiring harness. I think it turned out it was a broken wire some where in a power wire. I will verify this information the next time I see him but he did get it going again. Thanks