Service bulletin 18-030-14 REV. A

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

NHTSA's summary

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 Unnecessary Malfunction Indicator Lamp (MIL) Illumination For The Following Diagnostic Trouble Codes (DTCs). These Faults Are Currently Tripped As A One Trip Fault And Should Have Been 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 Unnecessary Malfunction Indicator Lamp (MIL) Illumination For: * 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. * U3017 - Control Module Timer/Clock Performance. * 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

The document

• NHTSA's copy of the document (PDF)
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The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Trouble codes named

P0087, P0128, P0201, P0206, P026A, P026B, P049D, P04DB, P0544, P0711, P0712, P0713, P0714, P0740, P0869, P0933, P0934, P0935, P1775, P1776, P2281, U0002, U0100, U110E, U1421, U1A24, U3017

Listing a model year does not mean every vehicle of it is concerned: the document says which.

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