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This bulletin applies to 2019 Chrysler Pacifica vehicles built on or before June 18, 2019, and equipped with a 3.6L V6, 24-valve VVT engine. Customers may experience a MIL on. The technician may find various DTCs set:

  • P0456 (EVAP system small leak)
  • P258B (electronic vacuum pump performance)
  • P06EF (engine restart performance)
  • P057B (brake pedal position sensor circuit performance)

The engine may also exhibit a rough idle, and the engine start stop (ESS) may be disabled during an auto-start, requiring the driver to restart the engine.

Reprogram the PCM with the latest software. The expected completion time for the flash download portion of this procedure is approximately 6 minutes.

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