Q: Car shifting high when foot on gas pedal

Transmission sensors are usually just to measure vehicle speed and sometimes rpm. I would think that a hydraulic or mechanical  transmission issue would be a more likely cause considering the symptoms. I would first start by checking the transmission fluid level and ensure it is within specification. If the fluid is low, this may be related to your issue and I would recommend adding some fluid. If the issue does not go away after adding fluid, I would enlist the assistance of a qualified technician to inspect your transmission for faults. Transmissions are very complex and can be difficult to diagnose properly.