Hi @jamiewelch79645
Here's the [document|32639|tech sheet] for the dishwasher that may help.
Run the diagnostic tests as described on p.3.
If any error codes are displayed by the tests see p.7→p.9 for the code meaning and possible causes.
If there is a faulty part and it needs replacing, here's a [https://www.searspartsdirect.com/model/ovjapo3osd-000582/kenmore-66513222n413-dishwasher-parts|parts list] that is ''useful.''
Search through the parts to locate the wanted part and once found, you'll find the ''manufacturer's part number'' is listed with the part. Search online for the ''part number only'' to find suppliers that suit you best.
If it is an electrical problem¹ in the machine, you may need to have a [https://www.walmart.com/c/kp/digital-multimeters|DMM] (supplier example only - they're available from other suppliers as well) and know how to use it safely when testing in areas where lethal AC voltage may be connected. Although initially you can test using the Ohmmeter function of the meter, with the power disconnected from the dishwasher. If you haven't got one and wish to get one, ensure that it has a user manual (or a downloadable one) so you know how to use it in case you already don't know.
¹ You may have to prove whether it is an electrical or a mechanical problem i.e. no power to a part in the machine or the part itself Example only - no heater function so either no power to heater element or faulty heater element.