- Faulty Downshift Switch
- Downshift Switch harness is open or shorted
- Downshift Switch circuit poor electrical connection
- Engine Light ON (or Service Engine Soon Warning Light)
P2780 DescriptionThe Engine Control Module (ECM) monitors the Downshift Switch Circuit signal. The ECM sets the OBDII code when the Downshift Switch Circuit signal is out of factory specifications.
P2780 Information for specific makes
- P2780 DODGE Downshift Switch Circuit Low
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