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P1884 on the 2005 Suzuki Reno

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 P1884
02080552005-09-12. Service bulletin. HARSH 4TH TO 3RD AUTOMATIC DOWNSHIFT AND UNWANTED P1884 DTC. 2004 SUZUKI RENO-RQ420 *SC

1 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.