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Hello and welcome to just answer.i can help you with this..
Conditions Which Generate This Code:
This condition indicates a customer specified parameter or a system configuration parameter that requires programming has not been programmed.
When a new Engine Control Module (ECM) is initially powered up, the following parameters must be programmed in order to avoid this diagnostic code:
Note: If the "Rating Number" has not been programmed, the ECM will limit the engine power to 119 kW (160 hp).
this is the code if the serial number on your engine starts with mbn,let me know how you do,this code can come up if the ecm is starting to act up..
is that JRE?
Is there any other numbers on the valve cover?