Power Take Off
WARNING: This page is about a different car, the 2020 Ford F-550 Super Duty, 2020 Ford F-450 Super Duty, 2020 Ford F-350 Super Duty, 2020 Ford F-250 Super Duty, and 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
The PTO system provides an input signal to the PCM indicating there is an additional load being applied to the engine. The PCM disables the on board diagnostic (OBD) monitors and increases the engine RPM based on the PTO system or auxiliary idle control input.