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I have a Safari RV with Cummins ISC 350 engine that fires but…

I have a Safari RV...
I have a Safari RV with Cummins ISC 350 engine that fires but shortly coughs to a stop. Diagnostic code 254 12 Controller #1 Bad program. Where is this controller and could a bad connection be the problem?
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Answered in 8 minutes by:
3/18/2015
Technician: cumminsdr, Mechanic replied 7 years ago
cumminsdr
cumminsdr, Mechanic
Category: Medium and Heavy Trucks
Satisfied Customers: 4,480
Experience: All types of Cummins applications
Verified
Hello and welcome to Just Answer! I would be more than happy to assist you today.What is your engine serial number?
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Technician: cumminsdr, Mechanic replied 7 years ago
Ok I found the code with out the ESN.Your ECM has failed and must be replaced and recalibrated by Cummins
The ECM is located on the fuel system side of the engine. It is attached at the cylinder head between cylinders 2 and 3.
CODE REASON EFFECT
Fault Code: 111
PID: S254
SPN: 629
FMI: 12/12
LAMP: Red
SRT:
Engine Control Module - critical internal failure. Error internal to the ECM related to memory hardware failures or internal ECM voltage supply circuits.
Engine may not start or die
This fault code can only be caused by an internal ECM problem. Repairs are not possible for the ECM
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Customer reply replied 7 years ago
Wow--sounds expensive and a little bit pat. Are there computer programs to test just the ECM? Could the problem be an oily plug/recepticle?
Technician: cumminsdr, Mechanic replied 7 years ago
Sorry but No, The failure is internal to the ECM related to memory hardware failures or internal ECM voltage supply circuits. This is the code you never want to see because the only repair is to reolace the ECM.The only troubleshooting for this code is to replace the ECM.
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Customer reply replied 7 years ago
I note that you are diagnosing based on fault code 111. The codes from my SilverLeaf diagnostics history are 254 12 and a couple 18 codes 18 5 & 18 7 (fuel control valve-low current and not responding). Is this fuel control valve part of the ECM?For what it is worth, we just removed and inspected the air filter--really clogged with dust.
Technician: cumminsdr, Mechanic replied 7 years ago
Ok that should be checked every oil change, but that will not cause an internal ECM fault code.
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Customer reply replied 7 years ago
I will be replacing the air filter--50K miles on it I think. Monaco claims the SN: of the engine is(###) ###-#### The first tech got a completely different number off the engine.
Technician: cumminsdr, Mechanic replied 7 years ago
The engine serial number is ***** digits long and is found on the data plate Fault 111 is Cummins code 254 12 is what your unit gives you. and I cross to the cummins code
CODE REASON EFFECT
Fault Code: 111
PID: S254
SPN: 629
FMI: 12/12
LAMP: Red
SRT:
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Customer reply replied 7 years ago
OK. I knew Cummins liked to keep their stuff proprietary. Just did not know it was to that extent. Reckon I have exhausted my concerns. Is there a chance you can send a log of this conversation to me?
Technician: cumminsdr, Mechanic replied 7 years ago
You should see the entire thread, Above either copy and print the thread or print the page.
cumminsdr
cumminsdr, Mechanic
Category: Medium and Heavy Trucks
Satisfied Customers: 4,480
Experience: All types of Cummins applications
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