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 A One Trip Fault To A Two Trip Fault:
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
