# Service bulletin 18\-099\-16

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: 10121722
- Published by NHTSA: 2017\-11\-03
- Manufacturer's number: 18\-099\-16
- Manufacturer's date: 2016\-09\-02
- NHTSA component: ENGINE; ELECTRICAL SYSTEM

## NHTSA's summary

Flash: 6.7L Diagnostic And System Improvements This bulletin involves reprogramming the Engine Control Module \(ECM\) with the latest available software. Several software improvements are available for vehicles equipped with a Cummins 6.7L turbo diesel. NOTE: There will be a choice between two 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. Improvements to prevent or reduce Malfunction Indicator Lamp \(MIL\) illumination when no defect is present for the following Diagnostic Trouble Codes \(DTCs\): · \*\*P20EE \- Selective Catalytic Reduction \(SCR\) NOx Catalyst Efficiency Below Threshold \- Bank 1 \(For ammonia sensor equipped vehicles\).\*\* · P1C55 \- NOx Sensor Intermittent \- Bank 1 Sensor 1 \(For ammonia sensor deleted systems only\). · P218F \- Reductant No Flow Detected. · P242F \- Diesel Particulate Filter Restriction \- Ash Accumulation. · U110E \- Lost Ambient Temperature Message. · 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. · U3017 \- Control Module Timer/Clock Performance. · U1421 \- Implausible Ignition Key Off Time Received. · P2281 \- Air Leak Between MAF And Throttle Body. Other Software Improvements: · Ambient Air Temperature Improvements. · Operational Improvement for Dual Alternators. · Selective Catalytic Reduction \(SCR\) Efficiency scan tool test improvement. · Fuel Filter Minder calibration changes. · wiTECH Fuel Pressure Override and Fuel System Run Up test improvements. · Exhaust Gas Recirculation \(EGR\) system improvement to help prevent freeze up. · Diesel Exhaust Fluid \(DEF\) system enhancement during stationary regeneration.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2016/MC-10121722-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2016/MC-10121722-0001.pdf)

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

## Components

Electrical system, Engine

## Trouble codes named

P1C55, P205E, P20E8, P20EE, P218F, P2281, P242F, U110E, U1421, U3017

## Vehicles listed

- 2015 RAM 3500
- 2015 RAM 4500

## Recalls for the same vehicles and component

- [2018269](/recalls/tc/2018269.md), 2018-05-17: Engine
- [18V332000](/recalls/nhtsa/18V332000.md), 2018-05-17: ELECTRICAL SYSTEM:SOFTWARE; VEHICLE SPEED CONTROL:CRUISE CONTROL; ELECTRICAL SYSTEM:WIRING
- [2017441](/recalls/tc/2017441.md), 2017-09-13: Engine
- [17V562000](/recalls/nhtsa/17V562000.md), 2017-09-12: ENGINE AND ENGINE COOLING:ENGINE: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
- [S1623000028 Rev. K](/bulletins/11033975.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [S1623000028 REV.I](/bulletins/11033308.md), 2026-06-03, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
- [110603](/bulletins/11030026.md), 2026-03-13, Service bulletin: ELECTRICAL SYSTEM. SPEAKER \- NONE
- [110604](/bulletins/11030025.md), 2026-03-13, Service bulletin: ELECTRICAL SYSTEM. SPEAKER \- NONE
- [9100735](/bulletins/11026651.md), 2025-12-17, Service bulletin: ELECTRICAL SYSTEM. Verify "Z" part number availability. Order a "Z" part number for all Exchange Orders: Warranty, Mopar, Customer pay and Service contract. Order"68" part number for New unsold units only
- [S2503000004](/bulletins/11025513.md), 2025-11-13, Service bulletin: ELECTRICAL SYSTEM. Front Axle Disconnect \(FAD\) Electrical Connector Design Change On Replacement Axle Assemblies.
- [106241](/bulletins/11021585.md), 2025-08-06, Service bulletin: ELECTRICAL SYSTEM. LAMP \- DOME

JSON: [/v1/bulletins/10121722](/v1/bulletins/10121722)

[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%2018-099-16&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10121722&vehicle=Service%20bulletin%2018-099-16)