P1542 on the 2023 Toyota Highlander
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.
| T-TT-0741-23 | 2023-11-27. Service bulletin. TT: Some MY23-24 Highlander and Grand Highlander/HV vehicles may experience a condition where the engine does not restart automatically following a start/stop event. However, the engine may be restarted normally after a period of time in the IG OFF condition. This condition typically sets DTC P154200. Please contact TAS for diagnostic instructions to aid in resolution of the condition. |
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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.