Dodge Durango 2019 — technical service bulletin
Bulletin 18-039-25 · NHTSA communication 11020115 · issued Jun 25, 2025
Technical service bulletin
communication type
Electrical System
component
2019
model years
1
vehicle entries
Official 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.** Customers may experience the following: ● Actual fuel economy reporting may not match the Instrument Panel Cluster (IPC). Other software improvements: ● Calibration update to address EVAP system emissions monitor readiness status accuracy. This bulletin invol
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.