# Service bulletin 18\-079\-15

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: 10217442
- Published by NHTSA: 2022\-08\-08
- Manufacturer's number: 18\-079\-15
- Manufacturer's date: 2015\-10\-31
- NHTSA component: FUEL SYSTEM, GASOLINE; 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. WARNING:There will be a choice between 2 calibrations. One for vehicles that utilize an ammonia sensor and one for vehicles that have had the ammonia sensor removed. Be sure to select the correct software based on vehicle configuration. 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 Fault Codes. P049D \- EGR Control Position Exceeding Learning Limit. Improvements To Prevent Or Reduce Malfunction Indicator Lamp \(MIL\) Illumination When No Defect Is Present For: ? P205E \- \(Diesel Exhaust Fluid\) Reductant Tank Temperature Sensor Circuit Intermittent \(setting when the block heater is plugged in\). ? P20E8 \- \(Diesel Exhaust Fluid\) Reductant Pressure Too Low. ? U110E \- Lost Ambient Temperature Message. ? U3017 \- Control Module Timer/Clock Performance. ? 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. ? 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. ? SCR Efficiency scan tool test improvement.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10217442-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10217442-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Fuel system

## Trouble codes named

P0087, P0128, P0201, P0206, P049D, P0544, P0604, P2002, P202E, P205E, P20E8, P20EE, P2281, 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
- [2017441](/recalls/tc/2017441.md), 2017-09-13: Engine
- [17V562000](/recalls/nhtsa/17V562000.md), 2017-09-12: ENGINE AND ENGINE COOLING:ENGINE:DIESEL
- [2014449](/recalls/tc/2014449.md), 2014-10-09: Fuel System
- [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
- [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
- [Reference67A](/bulletins/10251812.md), 2024-03-18, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Emission Recall 67A D Truck Engine Calibration
- [Reference67A](/bulletins/10248914.md), 2024-01-16, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ENGINE AND ENGINE COOLING. Emission Recall 67A \- D Truck Engine Calibration
- [Recall06A](/bulletins/10248594.md), 2024-01-08, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Emissions Recall 06A \- Vehicle Emission Control Information Label
- [Recall06A](/bulletins/10244433.md), 2023-10-30, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; EQUIPMENT:OTHER:LABELS. Emissions Recall 06A \- Vehicle Emission Control Information Label

JSON: [/v1/bulletins/10217442](/v1/bulletins/10217442)

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