Error 1250 on cannon mx492

SOURCE: Error 0502

I did as suggested by another poster, clean the area of travel(ribbon,travel bar, etc) with a clean damp cloth and now it seems the problem has corrected it self
so far anyways ........

SOURCE: Cannon PIXMA MP520 Problem: Error code

I had this problem with the ink carriage jammed at the left hand side of the printer. I operated the lever in a hole on the top left hand side and eased the carriage along to the middle and pushed it back onto it's runners. All OK now.

SOURCE: Paper Jam

I have just had the same problem on one of these Canon MF4150 machines.
The manufactures warranty on our machine had expired just one week before this happened so I had to fix this myself.
The problem we had (which is very likely to be the same cause as yours) is when we removed some torn jammed paper, it had somehow pulled off a spring from inside the machine. The spring was linked to the paper jam sensor.
It does involve a LOT of work to fix it, and unless you are very 'techy' it may be quite a difficult task to do this for the 'average' person.
I had to completely disassemble the machine: Take off the front first (lift up the cover and there is 2 screws at the front and 2 clips on the bottom of the machine) Then remove the 2sides and finally the top (screws should be easy to see, to get the sides off, un-clip along the front edges and gently move them outwards and slide them backwards to release the clips on the back) being careful with the wires going to the scanner part). Then look for the fuser unit which is near the top at the back, there is a black rounded cover over the fuser. To remove the cover, look for 2 small clips one at each side and unclip the cover and gently lift upwards.  Under the cover on the left side you will see a small plastic rod which goes from the left side to a small tab in the middle, if you look about half way along that rod you should see a tiny spring, make sure this is clipped on properly and that you are able to rotate the rod and it should spring back to the proper position when you let go.
Once this is done, put it all back together again and it should work fine.

I'm sure a lot of other people probably have this same problem too so I hope this helps someone.

SOURCE: canon ip1880 continous paper jam error on screen

first you turn off your p.

SOURCE: error 212 on Cannon 6230 ?

E212 Lens sensor or motor problem
remove the glass, check to see if sensor is out of place. Turn off copier move lens by hand and turn on does lens move, yes motor is most likely O.K.
does it stop at the sensor and give code? yes replace ( or swap sensor) does it still do it? No? replace bad sensor. Let me know if you need anythinf else~