# Service bulletin 18\-002\-14 REV. B 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. - Type: Service bulletin - NHTSA id: 10139835 - Published by NHTSA: 2018\-06\-11 - Manufacturer's number: 18\-002\-14 REV. B - Manufacturer's date: 2014\-11\-14 - NHTSA component: POWER TRAIN; ENGINE AND ENGINE COOLING ## NHTSA's summary 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 \(BCU.\) ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2014/MC-10139835-9999.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2014/MC-10139835-0001.pdf) The document is the manufacturer's. This site does not hold it. ## Components Engine, Transmission and driveline ## Trouble codes named P0087, P0128, P0201, P0206, P049D, P0544, P0604, P2002, P202E, P20EE, P2281, P2453, U110E, U1421, U3017 ## Vehicles listed - 2014 RAM 3500 - 2014 RAM 4500 - 2014 RAM 5500 ## Recalls for the same vehicles and component - [2018269](/recalls/tc/2018269.md), 2018-05-17: Engine - [2017659](/recalls/tc/2017659.md), 2017-12-21: Powertrain - [17V821000](/recalls/nhtsa/17V821000.md), 2017-12-20: POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT - [2017441](/recalls/tc/2017441.md), 2017-09-13: Engine - [17V562000](/recalls/nhtsa/17V562000.md), 2017-09-12: ENGINE AND ENGINE COOLING:ENGINE:DIESEL - [2015204](/recalls/tc/2015204.md), 2015-05-14: Powertrain - [14V635000](/recalls/nhtsa/14V635000.md), 2014-10-08: ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL ## Other bulletins for the same vehicles and component - [9100923](/bulletins/11037599.md), 2026-09-30, Service bulletin: ELECTRICAL SYSTEM; ENGINE. AIR CLEANER \- NONE Instruction to Dealers while ordering the PN\# 68137142AD. 1. If the Air Cleaner Assembly is functional and only the MAF Sensor has failed, the dealer should order and replace only the MAF Sensor\(68002441AC\). 2. If the Air Cleaner Assembly has failed and the MAF Sensor remains functional, the dealer should order the new Air Cleaner Assembly PN\(68137142AD\) and reuse the existing MAF Sensor\(68002441AC\) from the failed assembly. 3. If both the Air Cleaner Assembly and the MAF Sensor have failed, the dealer should order both the New Air Cleaner Assembly\(68137142AD\) and the MAF Sensor\(68002441AC\) as separate service parts. - [112906](/bulletins/11034373.md), 2026-07-02, Service bulletin: ENGINE. BEARING \- CRANKSHAFT THRUST and KIT - [112906](/bulletins/11034337.md), 2026-07-02, Service bulletin: ENGINE. BEARING \- CRANKSHAFT THRUST and KIT - [102307](/bulletins/11012351.md), 2025-01-06, Service bulletin: POWER TRAIN. GEAR \- REACTION SUN - [102387](/bulletins/11012318.md), 2025-01-04, Service bulletin: POWER TRAIN. SEAL \- OUTPUT SHAFT - [102389](/bulletins/11012314.md), 2025-01-04, Service bulletin: POWER TRAIN. SEAL \- OUTPUT SHAFT - [101232](/bulletins/11010205.md), 2024-11-07, Service bulletin: POWER TRAIN. Plate \- Planetary - [67A Rev 4 Combo](/bulletins/11002737.md), 2024-07-02, Service bulletin: ENGINE. Emission Recall 67A D Truck Engine Calibration - [67A Rev 3 Combo](/bulletins/11002526.md), 2024-06-28, Service bulletin: ENGINE. EMISSION RECALL 67A D Truck Engine Calibration - [S1625000004 REV.A](/bulletins/11001020.md), 2024-06-05, Service bulletin: ENGINE; UNKNOWN OR OTHER. On Board Diagnosis \(OBD\) Monitor Readiness Information JSON: [/v1/bulletins/10139835](/v1/bulletins/10139835) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2018-002-14%20REV.%20B&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10139835&vehicle=Service%20bulletin%2018-002-14%20REV.%20B)