Mechanics lack of knowledge regarding shutdown events, codes etc??

I haven't played much with Detroit electronics but I've worked on a lot of different things. Most of the time in my experience, the troubleshooting manual will read something like this:

Fault xxx: Description of fault. Followed by "If faults yyy, zzz, etc are present, troubleshoot those faults first. If the above listed faults are not present, do yadda yadda yadda"

Again, I don't know much about Detroit specifically but most manufacturers have step by step instruction manuals that list test procedures for most every fault or condition possible.

 

Just curious, is your egr system after market or did the 60 series come with egr for the 08/09 models?

 

I have dealer software, I totally understand where your coming from.

The high DPF temp
Is not telling them why it's getting too hot but just the fact that it is & now a real mechanic needs to work on it & not just a parts changer like many mechanics are today...

 

For 2009, wouldn't it be a DD series??? it should have a DPF filter....NOT a Series 60...

 

With your engine, you are dealing with a logic fault, which tells you a condition, not a component. A typical hard fault, is usually something like a failed sensor/bad connection and are straight forward/easy to fix. Logic faults are harder, but not impossible, it sounds like you haven't found a logical mechanic.

For high DPF temps, it may not be out of range high, but one of the 3 sensors is higher than it should be based on readings from the other 2. The temps may all be good valid readings that are in sensor range, but they don't make sense with each other.

Where I see a lot of DDEC mechanics fail is not using the DDEC reports. In the reports, the last 3 faults are stored with a lot of detail. It shows all sensor, input and output readings at the time of the fault. Those readings often give you a direction to go.

If you could tell me the exact fault, SPN and FMI, I may be able to help, or at least give you a better starting point.

 

Makes sense that the engines ecm doesn't put out specific codes for an after market system.

@GrapeApe Are the mechanics at the typical truck stop shops trained to read DDEC reports?

 

Probably not, IMO any good tech at a typical truck stop doesn't stay long. Good techs are in high demand and they can make a lot more money elsewhere.

 

2009 cascadia has a horrible engine harness which throws numerous faulty codes often .. With engine idling and wheels chocked brakes set wiggle harness everywhere if codes pop up or engine stalls change it... I spent around 7500 changing parts till a good shop checked it that way