B12CD on the 2016 Jaguar XF
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.
| SSM72486 | 2017-04-10. Service bulletin. "ISSUE: CUSTOMERS MAY REPORT WHILST PRESSING THE AUTO STOP/START BUTTON IN THEIR VEHICLE, A WARNING MESSAGE MAY BE DISPLAYED IN THE INSTRUMENT CLUSTER - AUTO STOP/START NOT AVAILABLE. DTC B12CD-87 WILL BE LOGGED IN THE GATEWAY MODULE GWM). CAUSE: THE IGNITION LIVE INPUT INTO THE VEHICLE QUALITY MODULE (VQM), MAY HAVE A POOR CONNECTION, AND/OR NO LIN CIRCUIT BETWEEN THE VQM & GWM." |
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| SSM72486 | 2017-04-07. Service bulletin. "ISSUE: CUSTOMERS MAY REPORT WHILST PRESSING THE AUTO STOP/START BUTTON IN THEIR VEHICLE, A WARNING MESSAGE MAY BE DISPLAYED IN THE INSTRUMENT CLUSTER - AUTO STOP/START NOT AVAILABLE. DTC B12CD-87 WILL BE LOGGED IN THE GATEWAY MODULE GWM). CAUSE: THE IGNITION LIVE INPUT INTO THE VOLTAGE QUALITY MODULE (VQM), MAY HAVE A POOR CONNECTION, AND/OR NO LIN CIRCUIT BETWEEN THE VQM & GWM." |
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.