Flash: 6.7L Diagnostic And System Improvements
This bulletin involves selectively erasing and reprogramming the Engine Control Module (ECM/PCM) with new software. Several software improvements are available for vehicles equipped with a Cummins 6.7L turbo Diesel.Software To Prevent Or Reduce Unnecessary Malfunction Indicator Lamp (MIL) Illumination For The Following Diagnostic Trouble Codes (DTCs). These DTCs Are Currently Tripped As A
One Trip Fault And Should Have Been A Two Trip Fault:
P0201-P0206-Fuel Injector X Circuit/Open Fault Codes.
U110E - Lost Ambient Temperature Message.
P049D - EGR Control Position Exceeding Learning Limit.Improvements To Prevent Or Reduce Unnecessary Malfunction Indicator Lamp (Mil) Illumination For:
P0087 - Fuel Rail Pressure Too Low
P0544 - Exhaust Gas Temperature Sensor Circuit - Sensor 1/1
P2281 - Air Leak Between MAF And Throttle Body
P0128 - Thermostat Rationality. In low ambient temperatures
U3017 - Control Module Timer/Clock Performance
U1421 - Implausible Ignition Key Off Time Received
P202E - Diesel Exhaust Fluid (DEF) Reductant Injector Performance
P20EE - SCR NOX Catalyst Efficiency Below Threshold - Bank 1
P2002 - Diesel Particulate Filter Efficiency Below Threshold
P0604 - Internal control Module RAM Error. This DTC may be caused by enabling the remote throttle feature via the EVIC, and it will be accompanied by a service electronic throttle control message in the EVIC.Other Updates:
Urea system calibration changes
Fuel Filter Minder Calibration Changes
Cruise control system improvements
Improvements in exhaust brake switch operation
Charging system improvements for dual alternator applications
Various wiTECH data and system test additions and improvements
OBD Template changes for P2453
Dual Fuel Tank component update
Inducement Timer Reset (Feature enable in wiTech) PTO Denied Status Message Update
PTO Horn Request sent to Body Control Unit (BCU.)
