Technical Service Bulletin 18-068-20 REV. B — 2017 RAM 1500

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 Diagnostic Trouble Codes (DTCs) have been set:P1D30-00 - Oil Viscosity Too Low. Attempting to clear the DTC P1D30-00 will be unsuccessful. P2453-00 - Diesel Particulate Filter Differential Pressure Sensor Circuit Performance. P0401-00 - EGR Flow Insufficient Detected. P0133-00 - O2 Sensor 1/1 Slow Response. P20EE-00 - SCR NOX Catalyst Efficiency Below Threshold Bank 1. P050E-00 - Cold Start Engine Exhaust Temperature Too Low. P0299-00 - Turbocharger Underboost condition. P0402-00 - EGR Flow Excessive Detected. P245B - EGR Cooler Bypass Control Circuit Performance. P20C6 - Reductant Heater 4 Control Circuit Performance. P208B - Reductant Pump 1 Control Performance. P249C - Excessive Time To Enter Closed Loop Reductant Injection Control. P20E8-00 - Reductant Pressure Too Low. P20E9-00 - Reductant Pressure Too High. The following software enhancement is available:Some vehicles may have experienced a slight engine hesitation or lag in acceleration from engine start-up until the engine and exhaust warmed up. This update is intended to reduce the hesitation or lag in acceleration from engine start-up. In addition, the following software enhancement is also available:Ability to enable the ?Fuel System Cleaning? routine in wiTECH.