I think that is a printed circuit board (PCB) problem and is not user repairable. You might try unplugging the printer, wait about 10 - 15 minutes, hold down the power on button and plug the printer back, continuing to hold down the power on button for at least 60 seconds. If it doesn't clear the error code, it's a circuit board problem. If the printer is out of warrantee, it's cheaper to buy a new printer.
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