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December 19, 2024 Service bulletin

"Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp...

Chrysler technical service bulletin 18-089-24 for 2019 Chrysler 300.

Bulletin number
18-089-24
Component
Power train
Summary
"Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0420 - Catalyst System Efficiency Below Threshold Bank 1. ● P0430 - Catalyst System Efficiency Below Threshold Bank 2. ● P0456 - EVAP System Small Leak. NOTE: If DTC P0456 is present use the wiTECH Small Leak Verification test (SLVT) to determine if a leak is present in the system. This bulletin involves reprogramming the PCM with the latest available software."

Owners of these vehicles have filed 3 complaints in the transmission category.

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