Please help. Have several codes but no engine lights are on. 1998 Detroit 12.7

I would assume you can clear the codes like any car --disconnect the batteries for ten minutes ?
Also would watch for the 1st code to pop up -- sometimes in cars the later codes are a result of the failure from what ever sets off the first code.
"I am not a Diesel mechanic" --but know automobile mechanics fairly well --but a computer is a computer!

 

The only thing disconnecting the batteries erases is the time on your radio, it will never erase fault codes. They are written into the memory and can only be erased with a computer.

smp440, if you think codes are getting logged then you should have it looked at. Code 53 is an internal memory fault. I have seen this several times on the older Detroits with no ill effect, they will get logged, but the engines runs fine. If your engine is ok, I think you should be fine.

 

To answer your question when u check the flash codes active flash red inactive flashes yellow and he'd shut down faults will turn on red stop engine light where minor or non shut down faults will be yellow check engine lights but again on the flash code check if it flashed red that is a active fault if it flashes yellow that is a stored fault also your pressure and temp sensors share the ground so one bad sensor can cause multiple faults looking at your codes I would recommend that you change both the coolant and oil temp sensors that should fix 4 of the codes the 15 43 44 45 are all temp/pressure codes also this link will give you the wire diagram for engine if you want to dig deeper you can unhook ecm wires and ohm the sensors from ecm to sensor but up to you http://edoqs.com/download/2c01a5dc7347ed9a44b52d4e8d505554

 

That is one of the reasons I use a Scanguage D in my truck with a 2000 Series 60 in it. Detroits are known for popping a code once in a while, but it hardly ever stays active. With the Scanguage, I just clear the code from the ECM. If it immediately returns, then it is an active one that needs attention. If it doesn't, then you don't have fault codes stacking up all over the place. All it takes to pop a code is a slight variance in something like electrical or fuel. What one might consider just a hiccup. I use the Scangauge continuously for all the other information it provides, but dealing with codes is frosting on the cake. It will show a code that pops, even though there was no light activation on the dash showing a code was set.

http://www.scangauge.com/products/scangauged/

 

good info. how hard is it to install?

 

That's a nice little device, perfect for everyone.

 

Oh, the Scangauge is a piece of cake for even someone who has no mechanical ability at all. It just plugs into the OBD computer port (cab location of that depends on truck) which is easily accessible by anyone, and then you run the cable where you need to put the display up on the dash where you want it. That is it. You just need to set the display up for what you want for information and such. But even those that have little computer literacy can set it up. It is a real nice, simple device, but it can give you more information than you may really want. Just select the things you want to monitor, and the various screens of information you want.

To get the unit to stay where you want to view it, you might need to use a velcro strip or similar to hold it where you want it. Each cab and driver is different.