18-021-15 REV F

Flash: 3.0L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. It also involves replacement of the Oxygen (O2) Sensor and cleaning or replacement of the Exhaust Gas Temperature (EGT) Sensor 1/2 if necessary depending on Diagnostic Trouble Codes (DTCs) that may have set. A small number of customers may experience an intermittent engine shudder, bucking under hard acceleration, or vibration. In addition other customers may experience a Malfunction Indicator Lamp (MIL) illumination upon which the technician may find one or more of the following DTCs have been set: ? P1296-00 - EGR Slow Response - Increasing Flow. ? P249C-00 - Excessive Time To Enter Closed Loop Reductant Injection Timing Control. ? P20C2-00 - Reductant Heater 3 Control Circuit Performance. ? P24A4-00 - Particulate Filter Restriction - Soot Accumulation Too High. ? P24D1-00 - Particulate Matter Sensor Regeneration Incomplete. ? P1288-00 - NOX Sensor 1/2 Zero Offset Too High. ? P1289-00 - NOx Sensor 1/2 Zero Offset Too Low. ? P2463-00 - Diesel Particulate Filter - Soot Accumulation . ? U0422-00 - Implausible Data Received From Body Control Module. ? U3017-00 - Control Module Timer/Clock Performance. ? P26AB-00 - Engine Coolant Bypass Valve Stuck. ? P24AF-00 - Particulate Matter Sensor Circuit Performance. ? P2196-00 - O2 Sensor 1/1 Stuck Rich. ? P1E0C-00 - Empty Fuel Tank. ? P2237-00 - O2 Sensor 1/1 Pump Cell Current Circuit Open. ? P1297-00 - EGR Slow Response - Decreasing Flow. ? P0420-00 - Catalyst Efficiency (Bank 1). ? P204F-00 - Reductant System Performance. ? P20E9-00 - Reductant Pressure Too High. ? P2002-00 - Diesel Particulate Filter Efficiency Below Threshold. ? P2299-00 - Brake Pedal Position / Accelerator Pedal Position Incompatible. ? P241D-00 - SCR Inducement - Forced Engine Shutdown. ? P016A-00 - Excessive Time To Enter Closed Loop Air/Fuel