59.4 Error Message  – HP LaserJet  4250, 4300, 4350
The HP laserjet 4250, 4300, 4350’s are great machines. With their fast speeds, high volume printing, and little need for maintenance they should be around for quite a bit longer. One problem that I’ve been seeing more service request on with the HP laserjet 4250, 4300, and 4350 is the 59.4 error message. With more and more companies trying everything to save money they are going to third-party or rebuilt cartridges. Not all toner cartridges are built the same. Some do a really good job and replace as many parts as possible. Other companies do the bare minimum and just add toner. One thing most tend to do is add more toner than OEM specifications so they can state that there cartridge will last longer. Adding too much toner,  not replacing all the seals, or filling with a cheap low-grade toner  can lead to cartridge binding resulting in the 59.4 error message on the HP laserjet 4250, 4300, and 4350.
What is the 59.4 error message on the  HP laserjet 4250, 4300, 4350?
The 59.4 error message on the HP laserjet 4250, 4300, 4350 is a toner motor rotation error. Usually a result of a bound up toner. Replace the toner cartridge and you should be good to go. Everyone that I’ve run into has always been a rebuilt or third-party cartridge. Below is further  details on the 59.4 error message if you need to investigate the problem further.
Troubleshooting the 59.4 error message in more detail
1 Turn the printer off and then on.
2 Replace the print cartridge.
NEW Hp Q5942X Genuine 42X 20K Hicap Blk Toner 4250 435 (OEM Consumables)
3 Reconnect the print-cartridge-motor wire-harness on the dc controller PCA (location J86).
4 Replace the print-cartridge-motor.
Motor Main Drive (hp) 4250/4350 RK2-0273
 5 Replace the dc controller PCA..
Hopefully, that has helped you solve your 59.4 error message on your HP laserjet 4250, 4300, and 4350.
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