The contact owns a 2018 Ford Focus. The contact stated that on several occasions while driving at various speeds, the RPM fluctuated while shifting gears, and the transmission shifted erratically. The check engine warning light was illuminated. The vehicle was taken to an independent mechani,c where a handheld diagnostic tool retrieved DTC: P07A3. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 119,000.