Service bulletin 18-084-19

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10168492
Published by NHTSA	2019-12-02
Manufacturer's number	18-084-19
Manufacturer's date	2019-10-29
NHTSA component	POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM

NHTSA's summary

Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code (DTC) has been set: P0456 - EVAP System Small Leak.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Transmission and driveline, Automatic transmission, Transmission control module

Trouble codes named

P0456

Vehicles listed
DODGE CHARGER	2019

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
S1808000152	2023-04-17. Service bulletin. CEL (Check Engine Lamp) Illuminates, Recent PCM Replace or Flash Update Performed, Diagnostic Trouble Codes (DTCs) P057B Brake Pedal Position Sensor Circuit Performance, P1572 Brake Pedal Stuck, C0042-54 Brake Pedal Missing Calibration
S1508000323REVA	2022-09-26. Service bulletin. PCM Sets DTC P1400-Aftermarket Calibration Detected/Warranty Coverage Confirmation Required
9004509	2022-05-31. Service bulletin. Oil Filter If a Mopar Oil Filter is not available, use a filter that meets or exceeds USCAR36 specification and is compatible with semi and full synthetic oils. Recommended Brands: Wix, Purolator, and NapaGold
18-107-20	2021-03-01. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following (DTCs):P0420 - Catalyst System Efficiency Below Threshold Bank 1 P0430 - Catalyst System Efficiency Below Threshold Bank 2. Customers may also describe the following:Hearing a pre-detonation noise (Spark Knock) sound in the engine during acceleration. Odor of fuel at times(Pursuit Vehicles Only).
18-065-20	2020-09-28. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with updated software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the followingDiagnostic Trouble Code (DTC) has been set:P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test (SLVT) to determine if a leak is present in the system. In addition, customers may experience the following concern: An unpleasant odor in the vehicle under certain extreme ambient conditions(Police Group (Sales Code AHB) or Special Service Group (Sales Code AHV) only).
18-050-20	2020-06-22. Service bulletin. Powertrain Control Module (PCM) Replacement - P2172 - High Airflow/Vacuum Leak Detected (Instantaneous Accumulation) This bulletin involves replacing the Powertrain Control Module (PCM) and re-programming with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation a technician may find the following Diagnostic Trouble Code (DTC) set in the PCM memory:P2172 - High Airflow/Vacuum Leak Detected (Instantaneous Accumulation).
S2011000002	2020-05-18. Service bulletin. Customer complaint includes a Check Engine/MIL lamp-on condition with fault codes U113F-Lost Communication With Active Exhaust Valve 1 and/or U1140-Lost Communication With Active Exhaust Valve 2 active or stored in the powertrain control module (PCM).
18-087-19	2019-12-02. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with updated software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code (DTC) has been set: P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test (SLVT) to determine if a leak is present in the system.Perform this software flash only on vehicles with less than 57 miles on the odometer.
18-070-19	2019-12-02. Service bulletin. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code (DTC) has been set:P0456 - EVAP System Small Leak. Customers may also experience the following:Extended engine crank times.