ISM Overheating EGR???

[Lakepremix]

Good morning. Have a 2003 ISM320 V that is experiencing overheating problems. Replaced thermostat and put new water pump in (as she hasn't been replaced before). Still problems persist. Decided to plug in today with insite to see if gauge temp was similar to ecm temp. Found code 2271 EGR Valve Position Circuit - Voltage Above normal or shorted to high source.

So, if EGR is failed or failing will it produce a motor that overheats? My intuition says highly likely but wanted to hear if anyone has experienced such a problem. Thanks!