Hi Scotty,
My friend’s 2013 Hyundai Tucson (76800 miles) has P1326 with the check engine light flashing. It came on after I was doing about 80mph from 60 mph. I was in 80 mph range for only about 2 minutes or so. How do I fix it? Is the code a cause for concern? It seemed to have stalled at one point.
Thank you.
Knock sensor system has a fault and the engine is in limp home mode. Check engine light flashing means "stop driving until this is fixed". (Without knock detection the engine can experience severe damage.)
https://www.autocodes.com/p1326_hyundai.html
https://www.engine-codes.com/p1326_hyundai.html
Which engine in this car please?
Also what grade of gasoline was in the tank?
Have a deep scan done to see if the ignition timing is way off, or, like @mmj said, maybe stale or cheap fuel.
