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P2101 on the 2025 Nissan Sentra

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.

Nobody has written a description of this code yet.

Bulletins for this model year that name P2101
NTB25-0052025-01-30. Service bulletin. SERVICE INFORMATION If one of the APPLIED VEHICLES has DTC P2100 for “ETC MOT PWR-B1” or P2101 for “ETC FNCTN/CIRC-B1” stored in the Engine Control Module (ECM) with a customer complaint of loss of power, • Perform the revised Electronic Service Manual (ESM) procedure noted on page 2 for "PERFORM DTC CONFIRMATION PROCEDURE." HINT: This revised procedure will be added to the ESM in a future update.

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.