Help with a older john deere 540g3 yellow skidder

hi there had a f308 code which is solenoid d low or zero current. I replaced the solenoid repaired the Pina in that plug along with a couple others I also fixed a broken wire that was on a push in sensor on the side with a cap over it I lower the cap and tested it I now have a code that came up f404 can anyone tell me what this code might be thank you