FP DB Sensor Diagnostics Aid messages and codesEdit online The following topics describe the return codes, abend codes, and messages issued by Diagnostics Aid. FP DB Sensor Diagnostics Aid return codesFABADIAG contains the following return codes:FP DB Sensor Diagnostics Aid abend codesAll abend codes are accompanied by a FABUxxxx message. Refer to the appropriate message for problem determination.FP DB Sensor Diagnostics Aid messagesThe FABU messages are issued by the Diagnostics Aid.Parent topic: Diagnostics Aid for FP Stand-alone DB Sensor