An Ontario man has pleaded not guilty in connection with a fatal 2012 wrong-way crash that claimed the life of a man and his teenage daughter.

Sabastian Prosa of Caledon, Ont., appeared in court on Monday. He is facing 12 charges, including impaired driving causing death.

Police say the then-19-year-old was behind the wheel when a GMC Envoy was travelling in the wrong direction on the QEW eastbound to Highway 427 northbound on Aug. 5, 2012.

The SUV struck a Dodge Caravan at approximately 2:50 a.m. Jayantha Wijeratne, 49, his wife Antonette and their 16-year-old daughter Eleesha were in that minivan. The family was returning from a vacation in Florida when the tragic crash occurred.

Wijeratne and his daughter were pronounced dead at the scene. Wijeratne's wife was rushed to hospital with critical injuries. She was hospitalized for more than three months.

Prosa was also taken to hospital with serious injuries.

With a report from CTV Toronto's John Musselman