AutoStatsIQ
Data through Oct 2026
Model year

2021 IC BUS Resb

Body and fuel not decoded. Owner complaints on file from no date to no date.

Recalls (3)Complaints (0)Investigations (0)Bulletins (54)
Recall campaigns covering this model year321k vehicles or units across those campaigns
Owner complaints0Not enough peers on file
Severity indexNoneCrash, fire, injury or death per 100
First 24 months0Complaints in its first two years
Complaints over time

Complaints about the 2021 IC BUS Resb by year filed

Owner complaints about this model year, by the year they were filed with NHTSA.

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Source: NHTSA ODI complaints file. The lighter column runs through October.
Components

Complaints by component

Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.

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Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls

3 recall campaigns cover the 2021 IC BUS Resb

Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.

Recall campaigns for the 2021 IC BUS Resb
CampaignFiledSubjectComponentVehiclesRemedy
25V-580Sep 4, 2025Underfloor reinforcement may not have been installed, compromising the structural integrity of the busesStructure457Repair or modification
23V-371May 25, 2023Anti-lock brake system (ABS) indicator light does not remain illuminated when a malfunction exists, and when the vehicle's ignition switch is on,…Brakes19,376Software update
21V-367May 19, 2021Sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leakFuel system933Part replacement
Source: NHTSA ODI recalls file.
Look up a VIN at NHTSA
Owner complaints

What owners reported about the 2021 IC BUS Resb

The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.

0 complaints on file.

    Source: NHTSA ODI complaints file.
    Investigations

    NHTSA has not opened an investigation on this model year

    Source: NHTSA ODI investigations file.
    All investigations
    Service bulletins

    54 manufacturer communications cover this model year

    Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall.

    • IK2600255 Apr 23, 2026 · Service Bulletin/Repair Instructions
      This document provides guidance for assessing the feasibility of implementing a customer-requested change to an engine or vehicle parameter/feature. Customer requested changes will be approved in accordance with the requirements specified in 40 CFR Part 103…
    • IK4300035 Feb 3, 2026 · Service Bulletin/Repair Instructions
      This tool is designed to compare Diamond Logic feature data across multiple vehicle configuration files. It allows users to quickly load files either manually or directly from the Diamond Logic Builder Vehicles folder using VIN-based selection. As files are…
    • IK2600255 Jan 26, 2026 · Other
      This document provides guidance for assessing the feasibility of implementing a customer-requested change to an engine or vehicle parameter/feature. Customer requested changes will be approved in accordance with the requirements specified in 40 CFR Part 103…
    • IK2600090 Feb 5, 2026 · Other
      New CARB Idle Reduction Change Request
    • IK2600047 Jan 2, 2026 · Service Bulletin/Repair Instructions
      Engine replacements for all International engines will need to follow this procedure.
    • IK1600272 Dec 19, 2025 · Service Bulletin/Repair Instructions
      This document will guide the user through a step-by-step procedure for detecting water leaks in vehicle cabs and windshields using an ultrasonic sound detector.
    • IK2200119 Nov 7, 2025 · Service Bulletin/Repair Instructions
      IC Bus Operator's Manuals
    • IK1201009 Nov 6, 2025 · Service Bulletin/Repair Instructions
      In some geographic areas, ambient temperatures reaching below 15°F (-10 °C), including high levels of humidity, an operator may experience engine stalling, low performance, and or poor aftertreatment performance. This is caused by condensation accumulating …
    • IK0600030 Dec 5, 2025 · Service Bulletin/Repair Instructions
      This document will guide the user through understanding Prop Shaft Codes and understanding the variations of prop codes. (Metric Prop codes start with the number a 4 and Non metric Prop codes start with a 2.)
    • IK3400001 Aug 28, 2025 · Service Bulletin/Repair Instructions
      Title: Service Portal iKNow Feedback Case Types Applies To: All
    • IK1400005 Aug 25, 2025 · Service Bulletin/Repair Instructions
      Title: Driveline Information Center and Troubleshooting Procedures Applies To: All Vehicles
    • IK1900022 Jul 18, 2025 · Service Bulletin/Repair Instructions
      Title: A/C Refrigerant and Oil Capacities Applies To: All current models
    • IK0900157 Jul 17, 2025 · Service Bulletin/Repair Instructions
      Title: Fan belt replacement guidelines for frayed edges Applies To: All Models
    • IK0500054 Jun 4, 2025 · Service Bulletin/Repair Instructions
      Title: Steering Gear Seal Repair Guidelines Applies To: Steering gears
    • IK2600069 May 20, 2025 · Service Bulletin/Repair Instructions
      Title: How to Request a Horsepower Quote Applies To: All International and Cummins Electronic engines
    • IK2200088 Apr 22, 2025 · Service Bulletin/Repair Instructions
      Title: Factory Installed Air Conditioning, EC4.0 System BE, CE, FE, RE Bus Models
    • IK1400023 Oct 8, 2024 · Service Bulletin/Repair Instructions
      This article addresses chassis lean conditions on all chassis. This does not include any diagnostics for body leans such as a cab lean. Keep in mind that a chassis lean may cause or accentuate a cab lean. Filling out the printable form and using the notes i…
    • IK0800407 Feb 21, 2024 · Service Bulletin/Repair Instructions
      Starter Diagnostics and warranty claim procedure; all engines EXCLUDING Cummins ISB engine with Allison transmission or PSI engine.
    • IK0200013 Feb 21, 2024 · Service Bulletin/Repair Instructions
      Suggested alignment target values when performing a vehicle axle alignment.
    • IK0800351 Nov 21, 2023 · Service Bulletin/Repair Instructions
      J1939 Data Link Source Address Information
    • IK2600069 Sep 7, 2023 · Service Bulletin/Repair Instructions
      How to request a horsepower quote; all International and Cummins engines
    • IK2200109 Sep 25, 2023 · Service Bulletin/Repair Instructions
      Bus seat back foam inspection guidelines
    • IK1201457 Sep 22, 2023 · Service Bulletin/Repair Instructions
      Cummins B6.7 Grid Heater Relay
    • IK0400040 Sep 26, 2023 · Service Bulletin/Repair Instructions
      General Wheel Speed Sensor Troubleshooting
    • IK0300010 Sep 29, 2023 · Service Bulletin/Repair Instructions
      Diagnosis of chassis wander complaints.
    • IK2200154 Aug 18, 2023 · Service Bulletin/Repair Instructions
      Luggage rack upholstery repair; only busses equipped with luggage rack.
    • IK0800351 Aug 14, 2023 · Service Bulletin/Repair Instructions
      J1939 Data Link Source Address Information
    • IKo800080 Aug 14, 2023 · Service Bulletin/Repair Instructions
      J1939 Data Link Troubleshooting
    • IK1500105 Jun 21, 2023 · Service Bulletin/Repair Instructions
      Bus Diesel fuel Cap Leaks; only models built 11/30/2020 through 05/18/2023
    • IK0700120 Jun 16, 2023 · Service Bulletin/Repair Instructions
      QLS Emergency Calibration Revert Process
    • IK0700120 May 10, 2023 · Service Bulletin/Repair Instructions
      QLS Emergency Calibration Revert Process
    • 22502 May 10, 2023 · Service Bulletin/Repair Instructions
      Per agreement with EPA and CARB, Cummins, Inc. provided an emergency calibration for Cummins ISB, B6.7, ISL9, L9, and X15 engines when a DEF Quality Sensor (DQS) was not available. This action addressed the Diesel Exhaust Fluid (DEF) Quality Sensor failures…
    • IK1200101 Mar 23, 2023 · Service Bulletin/Repair Instructions
      Cummins Programming guide and fault codes285 & 265; only vehicles built with Cummins B6.7, X15, or L9 engines
    • IK0800407 Mar 15, 2023 · Service Bulletin/Repair Instructions
      Starter diagnostics and warranty claim procedure for all engines and all chassis EXCLUDING vehicles equipped with PSI engines or Cummins ISB engine with Allison transmissions
    • IK0900141 Feb 23, 2023 · Service Bulletin/Repair Instructions
      Air Compressor Inlet Hose Chaffing / Leaking
    • IK0700115 Jan 10, 2023 · Service Bulletin/Repair Instructions
      QLS Emergency ECM Calibration; only models equipped with Cummins B6.7, X15, L9, or International A26 engines
    • IK0800351 Nov 16, 2022 · Service Bulletin/Repair Instructions
      J1939 Data link source address information
    • IK0700115 Nov 18, 2022 · Service Bulletin/Repair Instructions
      QLS Emergency Calibration. applies to 2016 and newer Cummins B6.6, X15, and L9 engines and all A26 engines
    • IK1201472 Sep 29, 2022 · Service Bulletin/Repair Instructions
      Pico Scope CCOS (Crankcase Separator Test)
    • IK1201469 Aug 23, 2022 · Service Bulletin/Repair Instructions
      PicoScope Test One Channel RCT
    • IK0800610 Aug 23, 2022 · Service Bulletin/Repair Instructions
      PicoScope Test Resistance and Ohmmeter
    • IK0800609 Aug 23, 2022 · Service Bulletin/Repair Instructions
      PicoScope Test for Datalink (CAN) Health Shorts & opens
    • IK0800607 Aug 23, 2022 · Service Bulletin/Repair Instructions
      PicoScope Test - Battery Loss of Charge - Parasitic Draw Test
    • 22103 May 10, 2022 · Service Bulletin/Repair Instructions
      Certain IC RE school and commercial buses may have outdated BCM calibration that could result in the ABS indicator light illuminating at all times
    • IK2600255 Nov 22, 2021 · Service Bulletin/Repair Instructions
      Greenhouse Gas Phase 2 Regulatory Compliance Implementation
    • IK1000003 Nov 2, 2021 · Service Bulletin/Repair Instructions
      Power Steering Diagnostics Flow / Pressure Specifications For Power Steering Gears and Power Steering Pumps
    • IK0700115 Nov 18, 2021 · Service Bulletin/Repair Instructions
      QLS Emergency Calibration; Models equipped with 2016 and newer Cummins B6.7, X15 and L9 engines or International A26 engine.
    • IK2600251 Oct 19, 2021 · Service Bulletin/Repair Instructions
      How to obtain As built parameter list
    • IK0700115 Oct 22, 2021 · Service Bulletin/Repair Instructions
      QLS Emergency Calibration; Models with 2016 Cummins ISX, A26 and EPA 2017 and newer Cummins X15, L9, or B6.7 engines
    • IK1201299 Sep 30, 2021 · Service Bulletin/Repair Instructions
      Engine Oil Capacities. All International electronic engines 1994 to present and Cummins ISB, ISM, or ISX engines
    • IK0900141 Sep 30, 2021 · Service Bulletin/Repair Instructions
      DuraStar and MV Air Compressor Inlet Hose Rub. Only models equipped with Cummins ISB or B6.7 engines
    • IK0700115 Sep 30, 2021 · Service Bulletin/Repair Instructions
      QLS Emergency Calibration. Only models with EPA 2017 and newer Cummins X15, L9, or B6.7 engines
    • IK0400040 Jul 19, 2021 · Service Bulletin/Repair Instructions
      General wheel speed sensor troubleshooting
    • IK0700112 Jun 4, 2021 · Service Bulletin/Repair Instructions
      Aftertreatment Clamp Corrosion; Single Can Aftertreatment Systems
    Source: NHTSA manufacturer communications files.
    About service bulletins