Causes and Fixes P0780 Code: Shift Malfunction

How to fix P0780 Code: Shift Malfunction A P0780 code is set when the computer detects an abnormality with the transmission shifting. The cause of a P0780 code is often a failed component, which will usually give another code. Other error codes can help point to the problem. Some OBDII scan tools cannot read all transmission codes. Possible Causes of a P0780 Code: Low or Dirty Transmission Fluid (Clogged Filter) Faulty Shift Solenoid Faulty Input and Output Speed Sensors Wiring Issues (Open - Short - Fuse) Mechanical Problems (Clogged or Restricted Hydraulic Passages, Bad Valve Body) Faulty Computer (TCM - ECM - PCM) By using this information, the user assumes all risks of use.