P2780

Downshift Switch Circuit Low

DTC P2780, sometimes indicated as P278000 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the transmission (gearbox) causing downshift switch circuit low.

  • P2780: Downshift Switch Circuit Low
  • P2780: Transmission gear selection switch, downshift – circuit low
  • P2780 00: Transmission gear selection switch, downshift - circuit low

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