isabel21,

Different model, but same error code. Try reading...

http://en.community.dell.com/support-forums/peripherals/f/3528/p/19455949/20137598.aspx#20137598

Looks like it references to the ADC sensor

Rick

I was able to resolve the dreaded 009-654 on my c1765nfw. I downloaded/installed the usb driver for the printer and connected the printer to a usb port on my computer. I downloaded the latest firmware driver. I started the printer with a toner cartridge removed. I ran the Dell firmware upgrade program and it recognized that the printer was connected and loaded the firmware. When the firmware installation completed, I restarted the printer and everything is working again.

This solution may work on all other Dell printers that experienced the same error.

Same error code on my 1350cnw.  I've cleaned the sensors in the back with a Q-tip.  Removed all four toner cartridges and vacuum all around.  Reversed the hose on the shop vac and blew out the printer.  A lot of black toner flew out.  Even did the drop test four times.  Still have the same error code.  I would try updating the firmware but can't get passed the error message.  Can't open the menu to change cartridge type.