ECU Message
Diagnostic messages are read and displayed in the history behind the ECU Warning
symbol. For Standard J1939 SPN (Suspect Parameter Number) and FMI (Failure
Mode Identifier) are shown.
Detail SPN/FMI code specification see in:
• SAE Truck and Bus Control and Communications Network Standards Manual,
SAE HS-1939 Publication
• Or refer to corresponding engine manufacturer’s ECU error codes list.
Complete list of text diagnostic messages for each ECU can be found in ComAp
Electronic Engines Support manual.
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