Not sure which one you have so here's a link to d/l the service manual, the codes should be in there.
https://drive.google.com/drive/folders/1GcqS65GYd3yFmEAGsI7LP-eZp2jMRVJU
https://drive.google.com/drive/folders/1GcqS65GYd3yFmEAGsI7LP-eZp2jMRVJU