NHTSA ID Number: 10172047
Manufacturer Communication Number: IK1201446
TSB/Document Date: 2020-03-04
Summary
A26 Engine fault code SPN: 4364 FMI: 18 Supplemental Diagnostics; Only models built with A26 engine
IK1201446 - A26 SPN: 4364 FMI: 18 Supplemental Diagnostics
Page 1 of 5
Countries:
CANADA, UNITED STATES Document ID: IK1201446
Availability:
ISIS, NotSIR
Revision:
2
Major System:
Created:
1/21/2020
Current Language: English
Last Modified: 2/18/2020
Other Languages: NONE
Author:
Viewed:
William Knoth
1041
Less Info
Coding Information
Hide Details
Copy Link
Copy Relative Link
Bookmark
Add to Favorites
Provide Feedback
Helpful
Not Helpful
1
0
View My Bookmarks
Title : A26 SPN: 4364 FMI: 18 Supplemental Diagnostics
Applies To : All A26 engines
CHANGE LOG
Please refer to the change log text box below for recent changes to this article:
02/17/2020 - Calibration released to NavKal - Updated step 1 to reflect this change
02/03/2020 - Updated diag steps with calibration release info
01/21/2020 - Initial Article Release
DESCRIPTION
This document will guide the user through supplemental diagnostics for SPN: 4364 FMI: 18 on A26 engines
This document replaces and supplements the current FCAP and diagnostic manual.
In some operating conditions a buildup of DEF can occur in the mixing housing and SCR system, this build up can result in a
phenomenon known as ammonia slip. This occurs when the ammonia in the DEF does not react in the SCR system and pass
through the system. Once past the SCR the ammonia is picked up by the outlet NOx sensor as NOx, resulting in a bias
reading.
SYMPTOM(s)
Engine warning light will be on. There will be no drivability issues, derates or resulting damage to any aftertreatment devices as
a result of operation of the engine with SPN: 4364 FMI:18 active.
Diagnostic Trouble Codes & Dashboard Indicator Lights:
DTC/Light
Description
SPN 4364 FMI 18
Aftertreatment SCR Conversion Efficiency low
Customer Observations or Concerns:
Engine warning light on.
SPECIAL TOOL(s) / SOFTWARE
Tool Description
Navistar
Engine Diagnostic Software
Tool Number
Comments
Instructions
Release: v6.5.16
https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 3/3/2020
IK1201446 - A26 SPN: 4364 FMI: 18 Supplemental Diagnostics
Page 2 of 5
SERVICE PARTS INFORMATION
Kit Description
Part Number
Quantity
Required
DEF Doser Gasket
4387978 (Cummins PN)
1
Notes
DIAGNOSTIC STEP(s)
Step Action
DIAGNOSTIC: ECM Calibration
Decision
Yes. Proceed to step 2.
Is the ECM calibration at xxxxSMxC or higher?
No. Update the ECM through NavKal.
Once the ECM is up to date; ensure a
regen is performed prior to releasing the
unit.
1
Step Action
DIAGNOSTIC:
Are there any other active or pending fault codes?
2
Yes. Diagnose and repair any active
faults first.
No. Proceed to Step 3.
Step Action
3
Decision
Decision
DIAGNOSTIC:
Yes. Proceed to step 4.
Pull and save a parameter file and the freeze frame data for this fault prior to
performing any diagnostics.
No. Repeat step 3.
https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 3/3/2020
IK1201446 - A26 SPN: 4364 FMI: 18 Supplemental Diagnostics
Page 3 of 5
Was the parameter and freeze frame data saved?
Step Action
DIAGNOSTIC: Check for air flow leaks and restrictions.
Check air filter restriction gauge. Then smoke test the intake, exhaust and
aftertreatment system.
Decision
Yes. Repair as needed. Proceed to
step 5.
Were any restrictions or leaks found?
4
No. Proceed to step 5.
Step Action
DIAGNOSTIC:
Decision
Yes. Repair as needed. Proceed to step
6.
Perform the DEF System Leak Test and visually inspect the DEF system for
leaks or damage to any DEF lines or fittings.
Were any leaks found?
5
No. Proceed to step 6.
https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 3/3/2020
IK1201446 - A26 SPN: 4364 FMI: 18 Supplemental Diagnostics
Step Action
DIAGNOSTIC:
Page 4 of 5
Decision
Yes. Repair as needed. Proceed to step
7.
Remove the DEF Doser and inspect the mounting surface for corrosion or
clogging of the injections port.
Was any corrosion or clogging found?
6
No. Proceed to step 7.
Step Action
DIAGNOSTIC:
Decision
Yes. Proceed to step 8.
Perform the DEF Dosing System Test, collect and measure the DEF output and
note the spray pattern in conical shaped and a fine mist.
Does the Doser produce the correct spray pattern and the collected
amount in spec?
No. Replace the DEF Doser and
repeat step 7. Once passing proceed to
step 8.
7
Step Action
DIAGNOSTIC: Regen + 20 mins of idle
Run and record a regen, allowing the engine to idle for at least 20mins post
regen.
Decision
Yes. Open a tech service case file and
attach the regen, parameter file and
freeze frame data to the case for
additional assistance.
Note: The idle shut down timer may need to be changed to complete this test.
Was a regen with 20 mins of idle time successfully recorded?
8
No. Repeat step 8
https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 3/3/2020
IK1201446 - A26 SPN: 4364 FMI: 18 Supplemental Diagnostics
Page 5 of 5
REPAIR STEP(s)
Note: Any repairs for this fault should include a regen to ensure any buildup of DEF in the mixer or SCR is burned off prior to
releasing the unit.
WARRANTY INFORMATION
Warranty Claim Coding:
Refer to the Warranty Coding Manual for Group and Noun Codes.
Standard Repair Time(s):
Refer to the SRT Manual for Repair Times
OTHER RESOURCES
Master Service Information Site
Hide Details
Feedback Information
Viewed:
1040
Helpful:
1
Not Helpful: 0
No Feedback Found
Copyright © 2020 Navistar, Inc.
https://evalue.internationaldelivers.com/service_kb/DocTool/ArticleViewer.aspx?ControlID... 3/3/2020
- Advanced protection against the four main causes of engine...
- Delivers 40% stronger wear protection than industry...
- Provides 15% better deposit defense vs. industry standards...
- Up to 2.5X better heat protection vs. industry standards to...
- Engineered for excellent low-temperature flow, reducing...
If the PDF is very large, it may not load in the preview below.
Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.
If the TSB PDF does not show, download or view it on the NHTSA Website.
Click on the (+) Plus Sign
Then Click on Associated Document(s)
Search NHTSA Database for Recalls
Search NHTSA Database for Vehicle Investigations
View Latest Vehicle Investigations
Search NHTSA Database for Vehicle Complaints
View Latest Vehicle Complaints
TSB/Document ID: IK1201446
Replacement Service Bulletin Number:
MFR Communication Date: 2020-02-18
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
- [Notice] When you receive a used device, it may be a customer return resold by Amazon without inspection. You can exchange it for a new one through Amazon. As this situation is unavoidable, we sincerely apologize. For any issues, contacting us via Amazon's "Messages" is the best way. THINKSCAN 689BT Bidirectional Scan Tool Can Be Used Immediately After It is Turned On, Without Complicated Registration Process, Which is More Convenient & Quick.
- Full Bi-Directional Control & 3000+ Active Tests: Take control and test components like actuators, fuel injectors, relays, and cooling fans in real time. You’ll quickly see if the problem is in the part itself or the control module — saving you hours of guesswork and frustrating trial-and-error.
- Advanced ECU Coding Capabilities: Handle module matching and hidden feature activation with confidence. When you replace an ECU or want to customize settings, this obd2 scanner diagnostic bi directional tool gives you the professional-level capabilities you need without the dealership price tag.
- 34+ Useful Reset and Maintenance Functions: Complete everyday service tasks smoothly with a wide range of helpful reset and maintenance functions. Whether you’re keeping up with regular upkeep or tackling a specific job, this scanner makes maintenance simpler and less stressful for both DIYers and pros.
- Comprehensive Full System Diagnostics: Diagnose every major system — Engine, Transmission, ABS, SRS, TPMS, and more — all in one place. Finally stop wondering if you’re missing something important; get the full picture and clear codes with ease.
- Top Reasons to Choose the D7S OBD2 Scanner: XTOOL D7S car scan tool, an upgrade of XTOOL D7, offers comprehensive features for automotive technicians, workshops, and DIY enthusiasts 1. Upgraded Hardware: 2+64GB memory, rear camera, intuitive interface, foldable bracket 2. Complete Diagnostics: FCA
Autoauth, OE-level all system scan, 39+ maintenance services, 4K+ bidirectional, CANFD/DoIP protocol 3. Advanced Capabilities: ECU coding, PMI functions 4. Wide Compatibility: Support 10,000+ models, covering 99% vehicle brands 5. Multi-language: Available in 22+ languages, No IP Restrictions 6. 3-Year Updates: Save 300 bucks on software updates for the latest features and optimizations - 2026 Upgraded D7S Car Scanner Features: The newly 2026 D7S V2.0 scanner for car brings exciting features for advanced vehicle diagnostics and enhanced user experience 1. FCA AutoAuth: Now supports FCA SGW module for Chrysler, for Jeep, for Dodge (2018+), for Fiat (2017+), enabling faster vehicle communication without gateway restrictions 2. PMI (Offline ECU Programming): Allows for Ford, for Lincoln, and for Mazda ECU programming for new modules 3. Optimized Diagnostic Report 2.0: Personalized reports with logos and customer info for auto shops. Note: Compatibility varies by cars, please check before order
- Cost-effective ECU Coding Scan Tool for Specific Brands: Enhance your vehicle's performance with XTOOL D7S! This obd2 scanner all systems bidirectional offers advanced capabilities at an affordable price, supports online for BMW, for Benz and offline for BENZ, for MIT, along with PMI functions for Ford, for Mazda, and for Lincoln. Ideal for technicians and DIY enthusiasts, this automotive scanner diagnostic tool optimizes vehicle performance and enhances the driving experience. Note: Not for all cars and modules, please send car VIN to check the compatibility before purchase
- OE All System Diagnostic & 8 Pids Graphing: XTOOL D7S is a comprehensive all system bi directional obd2 scanner that delivers dealer-level diagnostics, completely controlling over your vehicle’s performance and health. This automotive scan tool can read and clear DTCs, view live data and ECU information, retrieve freeze frames, and perform active tests and full obd2 functions. This bi-directional scan tool can can identify your vehicle's make, model, and year information with just one click and show up to 8 PIDs live data with options for CSV viewing, playback, and recording for in-depth analysis. It is easy-to-use for both professionals and beginners, helping pinpoint issues efficiently
- 3 Years Software Update, Value for Money: With 3 years of software updates and 22+ languages(no IP restrictions), XTOOL D7S auto scanner code scanner ensures ongoing compatibility for the latest car models and improved diagnostic functions. This all system vehicle diagnostic scanner comes with a 30-day return policy and a 24-month repair for dependable performance. XTOOL are dedicated to your satisfaction, so enjoy seamless support and lifetime expert assistance. Should you encounter any issues or concerns, don’t hesitate to reach out XTOOL. D7S with newest update with 22 languages freely transfer without authorization, check details from setting-language or from XTOOL
- 🔥 Historical lowest pr-ice now on sa-le--hot se-lling.
- 【🎈𝗜𝗙𝟳𝟰𝟱 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝘀 𝟲 𝗲𝘀𝘀𝗲𝗻𝘁𝗶𝗮𝗹 𝗿𝗲𝘀𝗲𝘁 𝗳𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀—𝗔𝗕𝗦 𝗕𝗹𝗲𝗲𝗱𝗶𝗻𝗴, 𝗢𝗶𝗹 𝗥𝗲𝘀𝗲𝘁, 𝗘𝗣𝗕, 𝗦𝗔𝗦, 𝗧𝗵𝗿𝗼𝘁𝘁𝗹𝗲 𝗥𝗲𝗹𝗲𝗮𝗿𝗻, 𝗮𝗻𝗱 𝗕𝗠𝗦—𝗽𝘂𝘁𝘁𝗶𝗻𝗴 𝗽𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹-𝗴𝗿𝗮𝗱𝗲 𝗺𝗮𝗶𝗻𝘁𝗲𝗻𝗮𝗻𝗰𝗲 𝗯𝗮𝗰𝗸 𝗶𝗻 𝘆𝗼𝘂𝗿 𝗵𝗮𝗻𝗱𝘀.】Spongy brakes? Stuck oil light? Parking brake won't release? Off-center steering? Rough idle after battery disconnect? Draining battery? IF745 handles all with a few taps. One tool covers six dealer-level resets, saving hundreds in labor costs. ❗ NOTE: Does NOT support bidirectional control, coding, or programming.
- 【✨ 𝗜𝗙𝟳𝟰𝟱 𝗴𝗼𝗲𝘀 𝗯𝗲𝘆𝗼𝗻𝗱 𝗯𝗮𝘀𝗶𝗰 𝗰𝗼𝗱𝗲 𝗿𝗲𝗮𝗱𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝟭𝟬 𝗶𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗲𝗱 𝗳𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀—𝗗𝗧𝗖 𝗟𝗼𝗼𝗸𝘂𝗽, 𝗜/𝗠 𝗥𝗲𝗮𝗱𝗶𝗻𝗲𝘀𝘀, 𝗙𝗿𝗲𝗲𝘇𝗲 𝗙𝗿𝗮𝗺𝗲, 𝗟𝗶𝘃𝗲 𝗗𝗮𝘁𝗮, 𝗢𝟮𝗦, 𝗢𝗕𝗠, 𝗘𝗩𝗔𝗣, 𝗮𝗻𝗱 𝗺𝗼𝗿𝗲. 】Pulling a code tells you something is wrong. IF745 tells you what the code means, when the fault happened, and what data surrounds it. Pass emissions with one I/M Readiness tap. Freeze the fault moment with Freeze Frame. Monitor live sensor data in real time. Turn cryptic codes into clear answers.
- 【🛒 𝗜𝗙𝟳𝟰𝟱 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝘀 𝗳𝘂𝗹𝗹-𝘀𝘆𝘀𝘁𝗲𝗺 𝗱𝗶𝗮𝗴𝗻𝗼𝘀𝘁𝗶𝗰𝘀 𝗮𝗰𝗿𝗼𝘀𝘀 𝗮𝗹𝗹 𝗺𝗼𝗱𝘂𝗹𝗲𝘀—𝗲𝗻𝗴𝗶𝗻𝗲, 𝗔𝗕𝗦, 𝗮𝗶𝗿𝗯𝗮𝗴, 𝘁𝗿𝗮𝗻𝘀𝗺𝗶𝘀𝘀𝗶𝗼𝗻, 𝘀𝘁𝗲𝗲𝗿𝗶𝗻𝗴, 𝘀𝘂𝘀𝗽𝗲𝗻𝘀𝗶𝗼𝗻, 𝗯𝗼𝗱𝘆 𝗲𝗹𝗲𝗰𝘁𝗿𝗼𝗻𝗶𝗰𝘀, 𝗮𝗻𝗱 𝗺𝗼𝗿𝗲. 】Warning lights on but you don't know why? Skip the $100+ diagnostic fee at the shop. Run a complete self-check from your driveway. IF745 reads and clears fault codes, retrieves ECU info, and displays live data from every accessible module—delivering a full vehicle health report in minutes, without leaving home.
- 【✅𝗜𝗙𝟳𝟰𝟱 𝗳𝗲𝗮𝘁𝘂𝗿𝗲𝘀 𝗮 𝟳-𝗶𝗻𝗰𝗵 𝗱𝗶𝘀𝗽𝗹𝗮𝘆, 𝗲𝗿𝗴𝗼𝗻𝗼𝗺𝗶𝗰 𝗱𝗲𝘀𝗶𝗴𝗻, 𝗪𝗶-𝗙𝗶 𝘂𝗽𝗱𝗮𝘁𝗲𝘀, 𝗮𝗻𝗱 𝘇𝗲𝗿𝗼 𝘀𝘂𝗯𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻 𝗳𝗲𝗲𝘀 𝗳𝗼𝗿 𝗵𝗮𝘀𝘀𝗹𝗲-𝗳𝗿𝗲𝗲 𝗱𝗶𝗮𝗴𝗻𝗼𝘀𝘁𝗶𝗰𝘀.】Large screen means no squinting. Intuitive navigation and customizable data displays put key info at your fingertips. Wi-Fi delivers lifetime free updates without a computer. No recurring fees. No hidden costs. Just a reliable tool that works as hard as you do.
This product presentation was made with AAWP plugin.