NHTSA ID Number: 11029445
Manufacturer Communication Number: CBR 126 022026
TSB/Document Date: 2026-03-03
Summary
CBR - The purpose of this solution is to give information on Engine Control Module (EMS) Software content.
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TSB/Document ID: CBR 126 022026
Replacement Service Bulletin Number:
MFR Communication Date: 2026-02-04
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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3/2/26, 2:51 PM
Print Solution
Uncontrolled Copy
ID #
CBR-126
Version
5
Title
Engine Control Module (EMS) Software (MSW) Information - November 2019; Improvement List (Change Log)
And Explanations For Issues And Diagnostic Trouble Codes (DTC, Fault Codes) US17+OBD2016 And
US17+OBD18 Emissions, Model Years 2018 And 2019
Abstract
The purpose of this solution is to give information on Engine Control Module (EMS) Software content.
This document lists issues or problems (DTCs, Fault Codes) mitigated or resolved in specific EMS software.
The newest EMS Main Software (MSW) part number typically includes improvements from previous EMS
software releases, and updating to the latest part number will most often cover items listed for older
software releases.
Content
Vehicles equipped with Variable Geometry Turbocharger will be referred to as VGT.
Vehicles equipped with Turbo Compound will be referred to as TC.
Software Release Table (Latest information at top)
Date Available Via PTT
VGT MSW Part #
TC MSW Part #
November 2025 (Current)
11L - 24834744
October 2024 (Current)
13L - 24834744
24834746
November 2019
23766686
23766691
May 2019
23470183
23470187
June 2018
23398790
23399381
February 2018
23242993
23242996
EMS software improvements with MSW Part Number 24834744/24834746. Available from November
2024. 11L from November 2025.
Vehicles
UI
;AllLive
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Reduction in occurrences of the following faults:
P0299-00 - Turbocharger/Supercharger Underboost
P0234-00 - Turbocharger/Supercharger Overboost Condition
P226C-00 - Turbocharger Boost Control "A" Slow Response
P20DC-00 - Exhaust Aftertreatment Fuel Supply Control Stuck Closed
P008A-00 - Low Pressure Fuel System Pressure - Too Low
P051B-64 - Engine High Resolution Crankcase Pressure Circuit Range/Performance
P00C6-00 - Fuel Rail Pressure Too Low - Engine Cranking
P0401-00 - Engine Exhaust Gas Recirculation 1 Valve Position Flow Insufficient Detected
P240F-00 - EGR Slow Response
P026C-00 – Fuel Injection Quantity Lower Than Expected
P026D-00 - Fuel Injection Quantity Higher Than Expected
P225C-00 - NOx Sensor Performance - Signal Stuck High Bank 1 Sensor 1
P2459-00 - Diesel Particulate Filter Regeneration Frequency (Bank 1)
P0191-64 - Fuel Rail Pressure Sensor Circuit Range/Performance Bank 1
P205B-64 - Reductant Tank Temperature Sensor Circuit Range/Performance
P2042-01 - Reductant Temperature Sensor
EMS software improvements with MSW Part Number
23766686/23766691. Available from November 2019.
All Vehicles
• Bug fix to prevent repeated or incomplete evaluations. Reduction in occurrences of the
following faults.
- P0420-00 Catalyst System Efficiency Below Threshold
- P0422-00 Catalyst 2 Efficiency Below Threshold (Bank 1)
• Exhaust Aftertreatment System analysis tool now active in Tech tool (Health Check). 258908-03-18 Exhaust Aftertreatment System Analysis is added with this EECU SW (TT 2.7.75 is
needed with this EECU SW)
- 2103-08-03-02 Cylinder Compression is unavailable.
- 2589-08-03-18 Exhaust After-treatment System Analysis will replace 2549-08-03-03 NOx
Conversion.
- 2589-08-03-17 Aftertreatment Particulate Sensor, Diagnostic Monitor does not work.
EMS software improvements with MSW Part Number
23470183/23470187. Available from May 2019.
All Vehicles
; Live UI
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• Smart Revert (DEF draining process) was added to prevent urea doser clogging.
Reduces occurrences of clogged urea dosage valve. Smart Revert requires EMS and
ACM software for functionality.
- P208E-00 - Aftertreatment Reagent Dosing Valve Clogged
- P103B-00 - Reagent Dosing Valve Inducement
• Reduction in occurrences of oil temperature plausibility fault.
- P0196-64 - Oil Temperature
• Reduction in the following Exhaust Aftertreatment faults.
- P0420-00 - Catalyst System Efficiency Below Threshold
- P0422-00 - Catalyst 2 Efficiency Below Threshold (Bank 1)
- P2698-00 - Exhaust Aftertreatment Fuel Injector "A" Performance
• Improved robustness for EATS Temperature Sensor faults
- P2080-64 - Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 1
Sensor 1)
- P2084-64 - Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 1
Sensor 2)
- P242B-64 - Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 1
Sensor 3)
TC Only
• Improved robustness for Fuel Injection fault.
- P026C-00 - Fuel Injection Quantity Lower Than Expected
EMS software improvements with MSW Part Number 23398790 /
23399381. Available from June 2018.
All Vehicles
• Reduces occurences of P04DB Crankcase Ventilation System Disconnected (P04DB00,
P04DB-00).
UI
• Reduces
occurrences of Intermittent engine speed signal loss, sudden change in vehicle
; Live
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speed, for short period of time (Hiccup or Surge).
• Reduces the potential for Intake Throttle Icing in Cold Weather. Any of the fault codes
below are possible with this issue:
- P24A4 Diesel Particulate Filter Restriction - Soot Accumulation Too High (Bank 1)
(P24A400, P24A4-00)
- P10FE Particulate Filter Restriction - Soot Accumulation Moderately High Bank 1
(P10FE00, P10FE-00)
- P02EC Diesel Intake Air Flow Control System - High Air Flow Detected (P02EC00, P02EC00)
- P02ED Diesel Intake Air Flow Control System - Low Air Flow Detected (P02ED00, P02ED00)
• Improvement in detection of Sweet spot, valid only when performance bonus feature is
turned ON.
• Allows operation of DEF Dosing Test, PTT Operation 2589-08-03-05 Aftertreatment
selective catalytic reduction (SCR) system Part 4, below 32° F (0° C).
Turbo Compound Only
• Reduces occurrences of P0471 Engine Exhaust Back Pressure Circuit Range/Performance
(P047164, P0471-64).
EMS software improvements with MSW Part Number 23242993 /
23242996. Available from February 2018.
All Vehicles
• Reduces occurrences of P02FA Diesel Intake Air Flow Position Sensor
Minimum/Maximum Stop Performance (P02FA97, P02FA-97).
• Reduces occurrences of P24DA Particulate Matter Sensor Exhaust Sample Error Bank 1
(P24DA00, P24DA-00).
• Reduces the potential for Intake Throttle Icing in Cold Weather. Any of the fault codes
below are possible with this issue:
- P24A4 Diesel Particulate Filter Restriction - Soot Accumulation Too High (Bank 1)
(P24A400, P24A4-00)
- P10FE Particulate Filter Restriction - Soot Accumulation Moderately High Bank 1
(P10FE00, P10FE-00)
- P02EC Diesel Intake Air Flow Control System - High Air Flow Detected (P02EC00,
; Live UI
P02EC-00)
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- P02ED Diesel Intake Air Flow Control System - Low Air Flow Detected (P02ED00,
P02ED-00)
• Improvements in the aftermarket routine for the PM sensor, PTT Operation 2589-08-0317 Aftertreatment Particulate Sensor, Diagnostic Monitor.
Vehices With 2-Box Exhaust Aftertreatment System (EATS) Only
• Reduces occurrences of P0420 Catalyst System Efficiency Below Threshold (P042000,
(P0420-00).
Tags
ems
k22114901
p009e73
p009e-73
p019664
p0196-64
p026c00
p026c-00
p02fa
p042000
p0420-00
p042200
p0422-00
p047164
p0471-64
p04db00
p04db-00
p1031
p103b00
p103b-00
p10fe00
p10fe-00
p208064
p2080-64
p208464
p2084-64
p208e00
p208e-00
p242b64
p242b-64
p24a400
p24a4-00
p24da00
p24da-00
software
Categories
Make and Model > Mack
Americas > CXU/CHU/PI - Pinnacle
Make and Model > Mack Americas > LR
Make and Model > Volvo > VN
Make and Model > Volvo > VAH
Make and Model > Volvo > VHD
Make and Model > Mack Americas > MRU/TE - TerraPro
Vehicle System > Engine
Vehicle System > Emissions
Vehicle System > Control Systems
; Live UI
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Make and Model > Mack Americas > AN - Anthem
Make and Model > Mack Americas > GU/GR - Granite
6/6
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