Flash: 3.0L Powertrain Diagnostic And System Enhancements
This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest
available software.
A small number of customers may experience bucking under hard acceleration. In addition
other 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:
? P20C2-00 - Reductant Heater 3 Control Circuit Performance.
? P1296-00 - EGR Slow Response - Increasing Flow.
? P249C-00 - Excessive Time To Enter Closed Loop Reductant Injection Timing
Control.
Upon further investigation a technician may find the following Diagnostic Trouble Code
(DTC) set in the Transmission Control Module (TCM) memory:
? U1424-00 - Implausible Engine Torque Signal Received.
