FixVault

DTC Chart - PCM/TCM

WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
DTC  Description  Action 
P1780 Transmission Control Switch (O/D Cancel) Circuit Out Of Self Test Range PERFORM the KOER self-test. If the DTC returns, GO to Pinpoint Test C