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Service bulletin 18-083-20

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)
TypeService bulletin
NHTSA id10181608
Published by NHTSA2020-10-26
Manufacturer's number18-083-20
Manufacturer's date2020-09-11
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION

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 following Diagnostic Trouble Code (DTC):P04FC - Crankcase Ventilation System Performance. Customer may also experience the following: Unable to set the cruise control above 132 km/h (82 mph). A hard brake pedal at higher altitudes. Software enhancements also includes the following:Improved brake pedal feel at higher altitude. Cruise control enhancement.

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

Transmission and driveline, Automatic transmission

Trouble codes named

P04FC

Vehicles listed
CHRYSLER 3002020

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
S18080001522023-04-17. 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
S21250000022022-09-26. Service bulletin. Customer complaint includes a Mil-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM:
S21250000022022-05-31. Service bulletin. Customer complaint includes a Mil-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM: