18-001-16 REV. C

Flash: 3.0L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience bucking under hard acceleration. In addition customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation a technician may find one or more of the following Diagnostic Trouble Codes (DTCs) set in the PCM memory: · **P206D-00 - Reductant Quality Sensor Circuit High. · P26AB-00 - Engine Coolant Bypass Valve Stuck. · P050E-00 - Cold Start Engine Exhaust Temperature Too Low. · U3017-00 - Control Module Timer/Clock Performance.** · P026A-00 - Charge Air Cooler Efficiency Below Threshold. · P1296-00 - EGR Slow Response - Increasing Flow. · P20C2-00 - Reductant Heater 3 Control Circuit Performance. · P249C-00 - Excessive Time To Enter Closed Loop Reductant Injection Timing Control. The technician may also find the following Diagnostic Trouble Code (DTC) set in the Transmission Control Module (TCM) memory: · U1424-00 - Implausible Engine Torque Signal Received.