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P2101 on the 2023 Acura RDX

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
BTI&043020259022025-05-06. Other. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023 RDXs and TLXs with a client complaint of the "Emissions System Warning" Malfunction Indicator Light (MIL) on with DTC P2101 (Electronic Throttle Control System Malfunction) stored. Client may experience the vehicle going into "limp" mode. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to your attempting a repair of any kind.
BTI&041620259022025-04-29. Other. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023 RDXs and TLXs with a client complaint of the "Emissions System Warning" Malfunction Indicator Light (MIL) on with DTC P2101 (Electronic Throttle Control System Malfunction) stored. Client may experience the vehicle going into "limp" mode. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to your attempting a repair of any kind.
BTI&111320249022024-11-19. Other. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023 RDXs and TLXs with a client complaint of the "Emissions System Warning" Malfunction Indicator Light (MIL) on with DTC P2101 (Electronic Throttle Control System Malfunction) stored. Client may experience the vehicle going into "limp home" mode. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to your attempting a repair of any kind.
BTI&102420249032024-11-06. Other. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023 RDXs and TLXs with a client complaint of the "Emissions System Warning" Malfunction Indicator Light (MIL) on with DTC P2101 (Electronic Throttle Control System Malfunction) stored. Client may experience the vehicle going into "limp home" mode. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to your attempting a repair of any kind.

4 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.