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P1680 on the 2003 Oldsmobile Bravada

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name P1680
31382005-02-01. Service bulletin. REDUCED POWER LIGHT ON AND DIAGNOSTIC TROUBLE CODE P1680 P1221 AND OR P1271 STORED IN THE POWERTRAIN CONTROL MODULE. *EH
31382004-11-04. Service bulletin. REDUCED POWER LIGHT ON AND DIAGNOSTIC TROUBLE CODE P1680 P1221 AND/OR P1271 STORED IN THE POWER CONTROL MODULE. *SC

2 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.