Canon Printer Pixma MP145 Secret Codes 5 October, 201521 September, 2016 by firodj, posted in Uncategorized Code E27 (Absorber Ink) (Printer off) Press and Hold R 4 secs, then Press and Hold P While Hold P, then release R then press R 2x Release P (Printer boot) Press R 4x Press P 2x Press P again (Printer shutdown)