HP Laserjet M476 with - 59.C0 error, and paper jam (paper sticking partial out of the exit assembly).

Just posting this to help anyone who has this error. Forum posts asking about this on HP's website have closed without resolution. Some people have fixed it by changing the sticky pad on the solenoid buried on the right side of the printer, but this didn't fix the issue with this printer.

We had to replace two photo sensors. The photosensor in the exit assembly, and a photosensor to the left of the developer motor, that is the left side of the developing motor when facing the printer from the front. These are not parts that you can buy from HP. You would need to pull the photosensors off of a parts printer. If that isn't possible, replace the printer.