I would assume John Deere must have some " data acquisition software" that they could leave hooked up to your tractor for one full day of tillage (or working tractor reasonable hard) and record most every necessary sensor reading, for a problem that reoccurs every 3 hours.

NOTE: software probably can't record absolutely every engine sensor, but it can be programmed to record the most important sensors, that involve the Regen process (CAT's laptop software had this ability) There are "timed" recording schedules, also. = like record every 3 seconds(for every programmed sensor), or every .25 seconds = if you programmed for every .25 seconds, then that limits you to how many sensors you can choose to record 


At a CAT dealership, on the very worse rare problems, we could put a CAT service dept laptop, with a 120 volt inverter, in a trucker's cab, for a day, and record readings (that we programmed the laptop to record/save to memory). Then later, examine and chart these sensor readings, the next day. (this was very rare, In fact, years ago; I wrote the 3 page "step by step" instructions, for the trucker/s who might have to restart the laptop and turn on the Data Acquisition software, himself. {or shutoff data, then shutoff laptop, at the end of the day}