P1778 on the 2010 Nissan Altima
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.
| NTB11002C | 2021-05-10. Service bulletin. IF YOU CONFIRM: The vehicle has slower-than-normal acceleration from a stop at times and/or the customer describes the vehicle has slower-than-normal acceleration from a stop at times and/or the MIL is ON with DTC P1778 (STEP MOTOR) stored in Engine and/or Transmission. ACTION: Refer to the REPAIR FLOW CHART on Page 2 of this bulletin. See this bulletin for further detail. |
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| NTB10150A | 2021-05-10. Service bulletin. IF YOU CONFIRM The vehicle has slower than normal acceleration from a stop at times, and/or the customer describes the vehicle has slower than normal acceleration from a stop at times, and/or The MIL is ON with DTC P1778 (STEP MOTOR) stored in Engine and/or Transmission. and/or Only for Sentra without ABS; MIL is ON with DTC P0720 (OUTPUT SPEED SENSOR) stored in Engine and/or Transmission. ACTIONS 1. Replace the transmission control valve assembly (valve body). 2. Reprogram the TCM (which includes TCM initialization). See this bulletin for further detail. |
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.