Technical Service Bulletin 18-033-25 — 2019 RAM 1500
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | 18-033-25 |
| Manufacturer | |
| Vehicle | 2019 RAM 1500 |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin 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. ● P06EF - Engine Restart Performance. ● P0175 - Fuel System 2/1 Rich. ● P258B - Electronic Vacuum Pump Performance. ● P0128 - Thermostat Rationality. ● C0062 - Longitudinal Acceleration Sensor. In addition, the customer may experience one or more of the following: ● **Vehicle fails emissions inspection testing due to OBD catalyst monitor readiness.** ● Engine RPM erratic and or bucking, when accelerating after slowing down. ● Occasional engine shut off while shifting from 4WD low to 2WD. ● Improvements to the vacuum pump cycle time. ● Rough idle after cold start. This bulletin involves reprogramming the PCM with the latest available software.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2019 RAM 1500
107563
ENGINE
96C Combo
ELECTRICAL SYSTEM
08-240-25
ELECTRICAL SYSTEM
S2519000006
ELECTRICAL SYSTEM
18-033-25 REV. A
ELECTRICAL SYSTEM
14-013-25
FUEL/PROPULSION SYSTEM
03-004-25
POWER TRAIN
102948
SERVICE BRAKES
9100460 REV1
SUSPENSION
25-009-24
UNKNOWN OR OTHER