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:
· **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.
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.
