Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
167-B2608-1
Service Bulletin/Repair Instructions
SB 26-004 2015-2020 MY COE CAC INLET HOSE Subject vehicles may experience a MIL (Malfunction Indicator Lamp) illuminated with one or more of the DTC’s (Diagnostic Trouble Codes) listed in the table below. Other symptoms may include • Abnormal noise. • Oil leakage from the CAC inlet hose. If any of these conditions are present, follow the inspection procedure and inspect the CAC inlet hose between the turbo outlet and the CAC inlet for correct installation and damage. If damage or installation issues are found, replace the CAC hose and clamps with the updated hose following the repair procedure below. DTC P0299 P0046 P2002 P2459 Code Definition Turbocharger Underboost VNT feed back limit exceeded Drop of DPF filtration efficiency Abnormality in DPR regeneration frequent P2463 Faulty operation of DPR regeneration
167-T2604-2
Service Bulletin/Repair Instructions
TT-26-002 Post Campaign AB5R0x or AB5S0x Supplement Manuals. After completing emissions campaign AB5R0x or AB5S0x, future diagnosis might be required. The purpose of this TechTip is to assist with locating supplement service manuals for post emissions campaign trucks that have completed campaign AB5R0x or AB5S0x
167-T2601-1
Service Bulletin/Repair Instructions
2011 – Current model year Hino Conventional and 2013 – 2020 model year Hino COE trucks equipped with reprogrammable control modules supported by the Hino Repro Server When reprograming a control module that is supported by the Hino Reprogramming server such as an Engine, Vehicle or Doser control module (ECU, VCS, DCU), the error below may be seen in DX3 when attempting to reprogram. This is typically the result of the VIN not being registered with the Hino Repro Server. This will require creation of an INF file via the DX3 and registering the file on the Hino Repro Server.
167-R2512-4
Service Campaign
AB5S0* CAMPAIGN KIT CONTENTS
167-R2512-3
Service Campaign
AB5S0* EMISSIONS RECALL To improve the Emission Control System and On-Board Diagnostic (OBD) System, Hino will perform the modifications below: •Re-programming software for Engine Control Unit(ECU) and Dosing Control Unit(DCU) •Replacing NOx sensors, PM sensor, Deisel Exhaust Fluid (DEF) sensor and Mass Air Flow (MAF) sensor •Replacing related harnesses •Adding heat insulation cover on the aftertreatment device, and others. •Check the Tailpipe and replace the DPF as necessary.
167-T2512-1
Service Bulletin/Repair Instructions
DO NOT REPROGRAM ECU or DCU FOR SUBJECT VEHICLES UNLESS RECALL AB5S0 or AB5R0 IS BEING PERFORMED Starting November 12, 2025, the Hino DX3 program will be updated to include new software versions for both the Engine Control Unit (ECU) and Doser Control Unit (DCU). These updates apply exclusively to vehicles eligible for the Emissions Modification (Recall) under campaign codes AB5S0 or AB5R0.
167-B2511-2
Service Bulletin/Repair Instructions
Beginning the week of November 3, 2025, both HinoNet and Dealer Connect will be updated to reflect the Emissions Recall for eligible vehicles. During this period, recall work instructions will be published on HinoNet, and an initial shipment of recall parts kits will be distributed to dealers based on UIO/AOR data.
167-B2511-1
Service Bulletin/Repair Instructions
STOP SALE NOTICE Hino Trucks has received approval to perform, and must now execute, an emissions recall under the terms of a Consent Decree with the Federal Government and the State of California. In order to ensure compliance with that agreement and timely completion of the recall, Hino dealers shall not sell, resell, re-lease, import or export any vehicle model identified above, unless it has received the applicable Emissions Modification (recall). This requirement applies from the date of this notice until which time the recall is completed for an eligible vehicle. Not adhering to this Consent Decree requirement could result in significant fines to Hino Trucks and/or the Hino dealer.
167-T2409-1
Service Bulletin/Repair Instructions
A brake pad mechanical wear indicator is now available as a service part. During the periodic brake pad inspection or when servicing the front or rear brakes, if the outer brake pads are not equipped with a mechanical wear indicator, mechanical wear indicator installation is recommended at the time of inspection or service. Two wear indicators are needed per axle, four per vehicle.
167-T2406-1
Service Bulletin/Repair Instructions
After connecting to a truck using DX3, it may be necessary to review or create a DX Diagnostic Report for review.
167-T2406-2
Service Bulletin/Repair Instructions
This article will provide dealership technicians with information on how to open a tech assist case and discuss what is required when opening a Tech Assist Case.
167-W2310-1
Service Bulletin/Repair Instructions
May exhibit an internal oil leak that could negatively impact operation of the Variable Nozzle and cause the MIL (malfunction Indicator Light) to illuminate.
167-T2305-2
Service Bulletin/Repair Instructions
Subject vehicles may experience a harsh shift condition with no DTC (Diagnostic Trouble Codes) set. If this condition is experienced, inspect the transmissions turbine speed sensor for proper operation.
167-T2301-7
Service Bulletin/Repair Instructions
RECOVERING THE DOSER CONTROL UNIT (DCU) AFTER A FAILED PROGRAMMING EVENT â DCU BLANK. TT-23-011
167-W2301-2
Service Bulletin/Repair Instructions
COE NITROGEN OXIDE (NOX) SENSOR â AAPE0
167-W2301-4
Service Bulletin/Repair Instructions
COE DIESEL PARTICULATE FILTER (DPF) â AASX0
167-T2211-5
Service Bulletin/Repair Instructions
The purpose of this procedure is to provide instructions in performing an injection quantity test on 2011 and newer Conventional or COE series trucks with DX3.
167-W2205-2
Service Bulletin/Repair Instructions
CAB OVER ENGINE (COE) PARTICULATE SENSOR (PM) SENSOR â AAP70. WP-22-009
167-B2106-1
Service Bulletin/Repair Instructions
BRAKE PEDAL KICK BACK/CLAIMED BOOSTER ENHANCEMENT PROGRAM AADD0-TECHASSIST CASE REQUIRED SERVICE ALERT NO: SA-21-003
167-E1907-01
Service Bulletin/Repair Instructions
Oil leak from the input rod: During the machining process of the input rod cylinder, a sharp protrusion was produced. This sharp protrusion scratched the packing seal, resulting in an oil leak. Brake pedal kickback: In some cases, the brake pedal may be depressed beyond the operational limit which will create scars on the end of the plunger inside the booster. The scars cause the oil passage to narrow, resulting in unbalanced pressure. The unbalanced pressure causes a kickback sensation to occur. The kickback sensation does not affect the braking function but could lead to the customer contacting the dealer about a possible brake malfunction.