Great job! Error codes pop up because there has been an error. I think D61 is the place where error codes are stored. D61,12, I think, means error code 12 has been registered and now stored in D61. Error code 12 relates to the crank shaft position sensor and its components. Clearing 'history' does not clear the fault. If the dash light thing happens again and you see D61/12 then there is a wiring fault that needs some lurrrrving.

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