Flash: 6.7L Diagnostic and System Improvements
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.
Several software improvements are available for vehicles equipped with a Cummins 6.7L turbo Diesel.Prevent Or Reduce Malfunction Indicator Lamp (MIL) Illumination When No Defect is Present For The Following Diagnostic Trouble Codes (DTCs). These Faults Have Been Changed From
P0201 - P0206 - Fuel Injector X Circuit/Open.
P049D - EGR Control Position Exceeding Learning Limit.
P0711 - Transmission Temperature Sensor Performance.
P0712 - Transmission Temperature Sensor Low.
P0713 - Transmission Temperature Sensor High.
P0714 - Transmission Temperature Sensor Intermittent.
P0740 - TCC Out Of Range.
P0869 - Line Pressure High.
P0933 - Hydraulic Pressure Sensor Range/Performance.
P0934 - Line Pressure Sensor Circuit Low.
P0935 - Line Pressure Sensor Circuit High.
P1775 - Solenoid Switch Valve Latched In TCC Position.
P1776 - Solenoid Switch Valve Latched In LR Position.
U0100 - Lost Communication With ECM/PCM.
U0002 - CAN C Bus Off performance - Bus Off.
U110E - Lost Ambient Temperature Message.The Following DTC Has Been Changed From A Two Trip Fault To One Trip Fault:
U1A24 - Lost Communication With Ammonia Sensor.Improvements To Prevent Or Reduce Malfunction Indicator Lamp (MIL) Illumination When No Defect Is Present For:
U3017 - Control Module Timer/Clock Performance.
P026B - Injection Timing Performance.
P0128 - Thermostat Rationality. In cold ambient temperatures.
P0087 - Fuel Rail Pressure Too Low.
P2281 - Air Leak Between MAF and Throttle Body.
U1421 - Implausible Ignition Key Off Time Received.
P026A - Charge Air Cooler Efficiency Below Threshold.
P04DB - Crankcase Ventilation System Disconnected.
P0544 - Exhaust Gas Temperature Sensor Circuit - Bank 1 Sensor 1.
P0562 - Battery Voltage Low.
P0604 - Internal Control Module RAM Error.
P1451 - Diesel Particulate Filter
