P18B1 on the 2020 Nissan Leaf
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.
| NTB24-012 | 2024-03-08. Service bulletin. DTC P18B1 STORED IN THE SHIFT CONTROL UNIT IF YOU CONFIRM DTC P18B1 for “CONTROL MODULE” is stored in the Shift Control Unit. ACTION Follow the SERVICE PROCEDURE in this bulletin to: 1. Confirm the current Shift Control Unit part number. 2. Reprogram the Shift Control Unit, if applicable. |
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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.