Epson XP-420-421-424 Error OxOA When it comes to the Epson XP-420-421-424 printer, encountering error code OxOA can be quite frustrating. This error code indicates a CR LOAD POSITION excess load error, CR encoder failure, CR motor failure, carriage overload, tooth skip or improper tension of the timing belt, or a cable or FFC disconnection. But…