P1780 FORD, LINCOLN, MAZDA, MERCURY: TRANSMISSION CONTROL SWITCH CIRCUIT IS OUT OF SELF-TEST RANGE
POST UPDATED IN June, 2023
P1780 FORD, LINCOLN, MAZDA, MERCURY: TRANSMISSION CONTROL SWITCH CIRCUIT IS OUT OF SELF-TEST RANGE
Some Ford and other vehicles that have automatic transmissions, also have a Transmission Control Switch (TCS). The TCS is incorporated into the gear selector. By pressing this switch, it is possible to prevent the transmission from going into overdrive.
The P1780 OBDII fault code is used by Ford, Lincoln, Mazda, and other manufacturers. It indicates that the Powertrain Control Module (PCM) has detected a fault in the TCS/TCSL circuit.
Reasons to set the P1780 OBD2 diagnostic code P1780 :
Steps to troubleshoot the DTC P1780 OBDII code: