RAM

18-048-20

2020-05-23 · NHTSA 10176587

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P24A5-00 - EGR Cooler Bypass Bank 1 Control Stuck. P20EE-00 - NOx Catalyst Efficiency Below Threshold. P0299-00 - Turbocharger Underboost. P1451-00 - Diesel Particulate Filter System Performance. P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation. P0420-00 - Catalyst System Efficiency Below Threshold Bank 1. P2002-00 - Diesel Particulate Filter Efficiency Below Threshold. P0191-00 - Fuel Rail Pressure Sensor Circuit Performance. P0461-00 - Fuel Level Sensor 1 Performance. P0401-00 - EGR System Performance. P208B-00 - Reductant Pump 1 Control Performance. The following improvements are also included in this update:Hydrocarbon Desorption Mode, will resume after key cycle. Engine stumble improvement, during engine warm up. Smoke improvement during highway driving and lower altitudes (sea level).

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.