NHTSA ID Number: 10081119
Manufacturer Communication Number: B11-L-003A
TSB/Document Date: 2016-09-29
Summary
IF A CUSTOMERS COMPLAINT LEADS TO THE DISCOVERY OF CONTAMINATED FUEL, THE SOURCE OF THE CONTAMINATION MUST BE FOUND AND REPAIRED. CONTAMINATED FUEL MAY RESULT IN MANY DIFFERENT FAILURES. SOME EXAMPLES OF THESE FAILURES ARE: PLUGGED FUEL FILTERS, POOR ENGINE PERFORMANCE, CHECK ENGINE LIGHT ILLUMINATION, FUEL SYSTEM (LINES AND TANK) CORROSION (RUST), ETC ISUZU
S FAILURE INVESTIGATIONS HAVE FOUND A COMMON OCCURRENCE OF THE FUEL FILLER NECK BEING INSTALLED INCORRECTLY. THIS POOR INSTALLATION WILL ALLOW UNWANTED MATERIAL TO ENTER THE FUEL TANK CONTAMINATING THE FUEL.
BULLETIN NUMBER:
IB11-L-003A
IMPORTANT SERVICE
INFORMATION FOR:
SERVICE MANAGER
ISSUE DATE:
SERVICE ADVISOR
JUNE 2016
TECHNICIAN
GROUP:
FUEL
PARTS DEPARTMENT
WARRANTY PERSONNEL
FUEL CONTAMINATION – INCORRECT FUEL FILLER NECK INSTALLATION
AFFECTED VEHICLES
2011 - 2017 MY Isuzu NPR/NPRHD/NPRXD/NQR/NRR
Equipped with a diesel engine
This bulletin supersedes bulletin IB11-L-003. This bulletin is being revised to
update affected model years. Please discard Corporate Bulletin Number IB11-L003
INFORMATION
This information is being issued to help dealers identify a potential source for fuel
contamination.
If a customer’s complaint leads to the discovery of contaminated fuel, the source of the
contamination must be found and repaired. Contaminated fuel may result in many
different failures. Some examples of these failures are: plugged fuel filters, poor engine
performance, check engine light illumination, fuel system (lines and tank) corrosion
(rust), etc… Isuzu’s failure investigations have found a common occurrence of the fuel
filler neck being installed incorrectly. This poor installation will allow unwanted material
to enter the fuel tank contaminating the fuel.
Use the information below to confirm the fuel filler neck is installed correctly. If the filler
neck installation is incorrect, use the information below to repair the fuel filler neck.
Detailed information regarding fuel filler neck installation can be found in Isuzu’s
Body Builder Guide.
FUEL FILLER NECK ASSEMBLY
IMPORTANT: The Rollover Valve Hose must be installed to the rollover valve and routed into the
corrugated hose protector in order for the valve to work properly.
ROLLOVER VALVE POSITION
The fuel filler neck must be installed with proper orientation on the body. The neck
should be installed with the roll-over valve pointing upward. The bottom edge of the
neck mounting flange must be parallel to the ground. See photo for reference.
INCORRECT INSTALLTION
Fuel filler necks found in these conditions will result in fuel contamination
ROLLOVER VALVE is installed upside down.
ROLLOVER VALVE TUBE is not installed.
WARRANTY INFORMATION
Any incorrect fuel filler neck installation or any failure resulting from
fuel contamination is NOT warrantable.
- Formulated for engines with 75,000 miles or more, Valvoline...
- Delivers 20% better wear protection and 15% better sludge...
- Extra detergents safeguard against friction, corrosion and...
- Advanced friction-fighting additives help maximize...
- Provides performance benefits for high mileage, new and...
- 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...
Last update on 2026-05-22 / Affiliate links / Images from Amazon Product Advertising API
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: B11-L-003A
Replacement Service Bulletin Number:
MFR Communication Date: 2016-06-03
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
- 🔥🔥🔥2026 New Functions Making X7HD the Top Dog - Big Surprise!!! ANCEL X7HD truck scanner 10 major functional advantages .✅>Full HDOBD/OBD2 Function ✅>ALL System Diagnostic ✅>42+ Reset Function ✅>Active Test / Bi-Directional Control✅>ECU Coding✅>Graphing Live Data✅>Wide Compatibility ✅>2 Yrs Free Update✅>Remote Operation✅>Bluetooth 5.0 & Wifi In addition, 8 major hardware advantages: ✅>6000 mAh✅>10.1 inch Tablet✅>2G RAM
✅>32G ROM (Expandable to 128GB)✅>Data Record & Replay & Print✅>Android 10.0✅>Bluetooth 5.0 & Wifi✅>14 Languages - 🚛OEM DPF Forced Regen & Cylinder Cutout Test & more - ANCEL X7HD diesel scanner diagnostic tool not only supports DPF regeneration, DPF reset, DPF related information reset, DPR state reset, DPD forced regeneration etc, which helps you better solve the exhaust aftertreatment system problems, but also supports activate motor to do exhaust air in ABS Automatically. Moreover, it features TPMS activation, cylinder cut-off and learning functions
- 🚛Advanced ECU Coding & Programming - ANCEL X7HD 10.1inch truck scanner diagnostic tool is equipped with advanced ECU coding, supports Level calibration, Idle speed learning and Adjustment, Camshaft timing control learning, Control unit adaptations, Injector Codes, Read/Write VIN, Road speed limit optional vehicle speed set, etc... PLEASE NOTE that ECU codes are not compatible with all vehicles, please send us your VIN# to check vehicle compatibility
- 🚛42+ Reset Functions & Bidirectional Control - 2026 newest top heavy duty truck scan tool, comes with 42+ special services (ECU, Speed Limit and Idle Reset, Oil Reset, Injector Coding, EPB, ABS, SRS, Suspension, Throttle, etc. and always keep growing), which meet all your various needs for service and maintenance
- 🚛10 Inch All Systems Diesel Scanner & Full HDOBD/OBD2 Modes - ANCEL X7HD diesel truck scan tool supports all systems scan, such as Engine, Brake, Retarder, TECU Transmission, Tachograph, ABS, SRS, TPMS, EPB, SAS, ESP, and other vehicle systems, comes with 10 obd2 service modes: read/erase error codes, Data Stream, I/M Readiness, Vehicle Information, Actuations, DTC Lookup, EVAP, view freeze frame, etc
- Dealer-Level Diagnostics, Faster & Easier: The heavy duty truck scanner delivers full-system diagnostics for engine, ABS, transmission, and more, plus 7+ reset functions like DPF Regen and Speed Limit Adjust. Powered by a 1.3G CPU, 2GB RAM, 16GB storage, Android 8.1, and a 3000mAh battery, it runs smoothly for fast scanning, live data, reports, Auto VIN, Wi-Fi updates, and easy handheld use. It captures screenshots, replays live data, and generates reports to support your repair decisions.
- Diesel Truck DPF Regen & Reset Features: Experiencing loss of power, sluggish acceleration, or poor hill-climbing performance? These symptoms are often caused by a clogged or overloaded DPF. The truck diagnostic scanner offers OEM-level forced DPF regeneration, DPF reset, and DPD/DPR functions. This device extends DPF lifespan and efficiently diagnoses exhaust aftertreatment issues. It can significantly reduce diagnostic time and save you up to $3,000 or more in costly dealership fees.
- 7+ Resets - Perform Essential Procedures: The truck scanner features 7+ essential resets including DPF Regen clears carbon buildup; Oil Reset clears service light; Injector Coding matches new injectors; DEF Test checks urea injection; Speed Limit Adjust saves fuel; Cylinder Cutout pinpoints misfires; Clutch Relearn restores smooth engagement. Reset after maintenance or part replacement for proper truck operation. Vehicle compatibility varies. Email [email protected] to confirm before buying.
- One Tool for 50+ Truck Brands: The diesel scanner supports J1939, J1708, J1587, and OBD2/CAN protocols, delivering broad coverage for major diesel trucks and commercial vehicles including Cummins, Cat, Detroit, Paccar, Volvo, Freightliner, Kenworth, Peterbilt, International, Mack, Isuzu, Hino, Scania, Mercedes-Benz, and more. Also supports Allison, Aisin, Eaton, WABCO, and Bendix, helping you diagnose more vehicles, reduce equipment costs, and handle more jobs with one professional scan tool.
- Full System Diagnostic for Truck: The truck scanner diagnostic tool covers all systems like engine, ABS, transmission, SAS, SRS, TPMS and more. It reads fault codes and shows real-time data. Additionally, it includes full HD OBD and OBD2 modes: read/clear codes, live data stream, I/M readiness, freeze frame, DTC lookup, and more. When warning lights appear or performance issues arise, quickly identify which system is affected and gain the real-time data needed for accurate diagnosis.
- Diagnose Heavy-Duty Truck Problems Fast — Read and clear fault codes and diagnose warning light issues on many Class 4–8 diesel trucks including Freightliner, Peterbilt, Kenworth, Volvo, Mack and Cummins-powered vehicles
- Help Reduce Downtime & Repair Costs — It offers full system diagnostics for major trucks meeting standard protocols, along with complete OBD2 functionality. Quickly check engine faults, view live truck data and identify issues before expensive repair shop visits or unnecessary repairs
- No complicated setup required — Simple menus and built-in DTC explanations make this truck code reader easy to use for owner-operators, mobile mechanics and small fleet maintenance
- Live Data & Built-in DTC Lookup — View real-time engine data and built-in truck fault code definitions directly on the scanner to help understand vehicle problems faster without searching through manuals
- Free Lifetime Updates & Technical Support — Includes free software updates plus responsive technical support for setup, compatibility and everyday truck diagnostics
Last update on 2026-05-22 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.